Most important publications:
Title: Comparative analysis of
ventricular assist devices (POLVAD and POLVAD_EXT) based on multiscale FEM
model.
Author(s): Milenin Andrzej;
Kopernik Magdalena
Source: Acta of bioengineering and
biomechanics / Wroclaw University of Technology Volume: 13 Issue: 2 Pages: 13-23 Published: 2011
Abstract: The prosthesis -
pulsatory ventricular assist device (VAD) - is made of polyurethane (PU) and
biocompatible TiN deposited by pulsed laser deposition (PLD) method. The paper
discusses the numerical modelling and computer-aided design of such an
artificial organ. Two types of VADs: POLVAD and POLVAD_EXT are investigated.
The main tasks and assumptions of the computer program developed are presented.
The multiscale model of VAD based on finite element method (FEM) is introduced
and the analysis of the stress-strain state in macroscale for the blood chamber
in both versions of VAD is shown, as well as the verification of the results
calculated by applying ABAQUS, a commercial FEM code. The FEM code developed is
based on a new approach to the simulation of multilayer materials obtained by
using PLD method. The model in microscale includes two components, i.e., model
of initial stresses (residual stress) caused by the deposition process and
simulation of active loadings observed in the blood chamber of POLVAD and
POLVAD_EXT. The computed distributions of stresses and strains in macro- and
microscales are helpful in defining precisely the regions of blood chamber,
which can be defined as the failure-source areas.
--------------------------------------------------------------------------------
Title: Computer Aided Design of
New Forging Technology for Crank Shafts
Author(s): Walczyk W.; Milenin
A.; Pietrzyk M.
Source: STEEL RESEARCH
INTERNATIONAL Volume: 82 Issue: 3 Pages: 187-194 DOI: 10.1002/srin.201000121 Published: MAR 2011
Abstract: Application of
numerical simulations to improve forging technology for crank shafts is the
objective of this work. Plastometric tests were performed for steels used for
manufacturing of crank shafts and a rheological model for these steels was
determined. Inverse analysis was applied for the identification of the model
parameters. This model was implemented in the finite element software and
simulations of various variants of forging were performed. Results of
simulations were used to select the best variant, which gives the lowest loses
of the material and proper shape of the final product.
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Title: The multi-scale physical
and numerical modeling of fracture phenomena in the MgCa0.8 alloy
Author(s) A. Milenin, D.J.
Byrska, O. Grydin
Source: Computers and Structures
89 (2011) 1038–1049
Abstract: The MgCa0.8 alloy can
be used to produce surgical threads. However, the low plasticity of this alloy
causes problems during wire drawing. A numerical model of the drawing process
can be used to optimize the deformation parameters. Research has shown that
fractures in MgCa0.8 start within grain boundaries; therefore, a model of the
drawing process should consider this mechanism. The main purpose of this work
is to develop a micro-scale numerical model of fracture in MgCa0.8 using the
boundary element method (BEM). Additionally, the potential for using the
developed BEM model as a part of the multi-scale model of the drawing process
is investigated.
doi:10.1016/j.compstruc.2011.01.003
--------------------------------------------------------------------------------
Title: Identification of material
model of TiN using numerical simulation of nanoindentation test
Author(s): Kopernik, M; Milenin,
A; Major, R, et al.
Source: MATERIALS SCIENCE AND
TECHNOLOGY Volume: 27 Issue: 3 Pages: 604-616 Published: 2011
Abstract: The development of the
model of the multistep nanoindentation test with Berkovich indenter, accounting
for the residual stress distribution, is one of the aims of the present paper.
The specimen is unloaded in the intervals between the deformation steps.
Substrate, which is composed of a ferritic steel and biocompatible pulsed laser
deposition TiN coating, is considered. The selection of the TiN was inspired by
its perspective application as the coating for a constructional element of the
heart prosthesis (blood chamber and aortic valves). Sensitivity analysis of the
model predictions with respect to its parameters is presented in the present
paper. The theory of elastic-plastic deformations is used in the finite element
model, which simulates both loading and unloading phases, accounting for the
real geometry of the indent. The main goal of the present paper was to
inversely analyse the tests for coating/substrate system. Square root error
between measured and predicted forces is the objective function in the
analysis. Results of the inverse calculations, which are presented in the
present paper, may be helpful in simulations of the behaviour of TiN deposited
on substrate in various applications as bionanomaterials.
DOI:
10.1179/026708310X12756557336193
--------------------------------------------------------------------------------
Title Mathematical model of warm
drawing process of magnesium alloys in heated dies
Author(s) Andrzej MILENIN, Piotr
KUSTRA
Source STEEL RESEARCH
INTERNATIONAL vol. 81 no. 9 spec. ed. s. 1251–1254 2010
Abstract
--------------------------------------------------------------------------------
Title: NUMERICAL MODELING OF
MACROSEGREGATION AND STRESS-STRAIN STATE DISTRIBUTION IN SLAB DURING CONTINUE
CASTING WITH SOFT REDUCTION
Author(s): Rec, T; Milenin, A
Conference Information: 5th
International Conference on Development Trends in Mechanization of Foundry
Processes, Date: OCT 14-16, 2010 Inwald POLAND
Source: ARCHIVES OF METALLURGY
AND MATERIALS Volume: 55 Issue: 3 Pages: 915-919 Published: 2010
Abstract: The center segregation
is forming in the slab during continuous casting process. The segregation of
elements in the slab is negative influences on mechanical, chemical and
microstructure of final product. One of the methods of decrease the center
segregation is mechanical soft reduction process. The efficiency of soft
reduction is dependent on value and localization of soft reduction and
parameters of continuous casting process. Moreover, the soft reduction process
to change the stress-strain state in the slab and it can cause formation cracks
on slab surface. The purpose of this paper is to develop a numerical FEM model
of continuous casting process with soft reduction process and optimization of
parameters of soft reduction for industrial example. The proposed numerical
model of slabs casting with soft reduction technology takes into ac-count the
processes of crystallization, thermal stress, diffusion, macrosegregation and
mechanical deformation.
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Title Development and Validation
of a Numerical Model of Rolling with Cyclic Horizontal Movement of Rolls
Author(s) Milenin, A; Grosman, F;
Madej, L; Pawlicki, J
Source STEEL RESEARCH
INTERNATIONAL 81 (3):p204-209 2010
Abstract The development of a
numerical model capable of simulating the forming processes characterized by
additional reversible movement of tools is the subject of this paper. The major
assumption of this process is the introduction of additional shear stresses
into the material in order to induce the strain path change effect. The scope
of the problem is very broad, so the focus in the present work is on the
process of flat rolling with additional oscillatory movement of rolls along
their axes. Due to the sophisticated nature of this process particular
attention is paid to the reduction in computational time by minimizing the
number of required finite elements. The developed model is used to study
differences in material behaviour during rolling with different roll
velocities. A detailed description of the developed numerical model and
examples of obtained results are presented in this paper. A comparison with
experimental analysis is presented, as well.
ISSN1611-3683
DOI 10.1002/srin.200900094
--------------------------------------------------------------------------------
Title Microstructure
Transformations in Tempering Steels during Continuous Cooling from Hot Forging
Temperatures
Author(s) Nurnberger, F; Grydin,
O; Schaper, M; Bach, FW; Koczurkiewicz, B; Milenin, A
Source STEEL RESEARCH
INTERNATIONAL 81 (3):p224-233 2010
Abstract Apart from reducing the
processing energy, hardening and tempering of near-net shape forged components
from their forging heat primarily promises shortened conventional process
sequences. In this case, the continuous cooling transformation diagrams (CCT
diagrams) found in the literature can only be used as a rough approximation of
microstructural transformations during the heat-treatment. The reasons for this
are that firstly, the deformation influences the transformation kinetics and
secondly, the deformation temperatures are comparatively high. Therefore, both
deformation CCT diagrams and, for reference purposes, CCT diagrams without
deformation were determined for a selection of heat-treatable steels (34CrMo4,
42CrMo4, 52CrMo4, 51CrV4, 34NiMo6) at the heating temperature of 1200 degrees C
and deformation levels of 0.3 and 0.6.
ISSN1611-3683
DOI 10.1002/srin.200900132
--------------------------------------------------------------------------------
Title Multiscale FEM model of
artificial heart chamber composed of nanocoatings
Author(s) Milenin, A; Kopernik, M
Source ACTA OF BIOENGINEERING AND
BIOMECHANICS 11 (2):p13-20 2009
Abstract The purpose of the
present work was to construct the multiscale FEM model of artificial heart
chamber composed of nanocoatings. This goal is reached by the development of
the FEM macromodel of artificial blood chamber using the commercial code and by
the creation of the micromodel based on our own FEM code. The latter uses
strain state obtained after loading in macromodel. The loci of failure initiation
in the material of chamber were precisely determined and these results are used
as an input data for the new micromodel.
ISSN1509-409X
--------------------------------------------------------------------------------
Title The multi-scale FEM simulation
of wire fracture during drawing of perlitic steel
Author(s) Milenin, A; Muskalski,
Z; Kustra, P
Editor(s) Niu, J; Liu, ZY; Jin,
C; Zhou, G
Source PHYSICAL AND NUMERICAL
SIMULATION OF MATERIALS PROCESSING, PTS 1 AND 2 575-5781433-1438 2008
Conference Title 5th
International Conference on Physical and Numerical Simulation of Material
Processing (ICPNS 07)
Conference Date OCT 23-27, 2007
Conference Location Zhengzhou,
PEOPLES R CHINA
Abstract The fracture development
during wire drawing operation is an important phenomenon governing the
productivity as well as the mechanical properties of the drawn wire. The wire
drawing processes was investigated in present paper in two separate levels -
using the 2-dimensional rigid-plastic finite element method (macro-level) and
modelling the microstructure changes (micro-level) by the Representative Volume
Elements (RVEs). To predict fracture initiation the phenomenological 14 theory
of fracture is used. The influence of initial cementite lamellas orientation on
triaxity factor and localization of deformation in micro-level is investigated.
Obtained results are helpful for a fundamental understanding of pearlitic
deformation during development of high strength steel wires for tire cord
applications.
ISSN0255-5476
--------------------------------------------------------------------------------
Title SENSITIVITY ANALYSIS OF
NANOINDENTATION TEST FOR SPECIMEN COMPOSED OF TiAlN AND TiN USING MATHEMATICAL
MODEL
Author(s) Kopernik, M; Milenin, A
Source STEEL RESEARCH
INTERNATIONAL p555-562 2008
Conference Title 12th
International Conference on Metal Forming
Conference Date SEP 21-24, 2008
Conference Location Cracow,
POLAND
Abstract The purpose of the paper
is the development of a mathematical model of the nanoindentation test and the
sensitivity analysis of the model output with respect to its parameters. The
work was performed for specimens composed of TiAlN and TiN. The theory of
elastic-plastic deformations is used for formulating of a mathematical model, which
simulates multistage indentation. The tested material is unloaded partially in
the intervals in the deformation steps. It is shown that an inverse analysis of
nanocoatings mechanical properties of examined nanocoatings can be based on the
measurements of indentation forces by using a cone indenter, as well as on the
parameters of unloading and the geometry of the indent during the test. The
presented results are helpful for a fundamental understanding of mechanical
behavior of nanocoatings and for the development of new materials to be used in
components of artificial hearts.
ISSN1611-3683
--------------------------------------------------------------------------------
Title A COUPLED FEM MODEL OF MACROSEGREGATION
AND STRESS-STRAIN STATE FORMATION IN INGOT DURING CONTINUOUS CASTING WITH
MECHANICAL SOFT REDUCTION
Author(s) Milenin, A; Rec, T
Source STEEL RESEARCH
INTERNATIONAL p603-610 2008
Conference Title 12th
International Conference on Metal Forming
Conference Date SEP 21-24, 2008
Conference Location Cracow,
POLAND
Abstract Development of the
mathematical model of macrosegregation and stress-strain state formation in
ingot produced by continuous casting (CC) with mechanical soft reduction is the
main goal of this paper. The numerical solution of this process is based on the
finite element method with the developed mathematical model of the soft
reduction (SR). This model of the SR in the cast slabs in semi-solid state
takes into account the processes of crystallization, thermal volume changes,
diffusion, macrosegregation and mechanical deformation of the ingot. A new
model of macro segregation formation in the slab during continuous casting with
the mechanical soft reduction is proposed here. This concept is based on the
simulations of the displacement of the liquid phase by soft reduction that
takes into account the equivalent artificial compressibility of the liquid
phase in the cross section of cast slabs. During the simulation the technical
features of the continuous casting machine are taken into account, namely
location and parameters of rolls, spray nozzles and cristallizator. The casting
process of 300x400 mm St3S steel ingot is selected as a case study in the
present work. The influence of the localization of mechanical soft reduction on
macrosegregation and stress-strain state formation in the cast slab is
investigated. The conclusions regarding mentioned influence are presented and
discussed.
ISSN1611-3683
--------------------------------------------------------------------------------
Title The FEM simulation of
cementite lamellas deformation in pearlitic colony during drawing of high
carbon steel
Author(s) Milenin, A; Muskalski,
Z
Editor(s) CeasarDeSa, JMA;
Santos, AD
Source NUMIFORM '07: Materials
Processing and Design: Modeling, Simulation and Applications, Pts I and II
9081375-1380 2007
Conference Title 9th
International Conference on Numerical Methods in Industrial Forming Processes
(NUMIFORM 07)
Conference Date JUN 17-21, 2007
Conference Location Univ Porto,
Fac Engn, Oporto, PORTUGAL
Abstract In paper the wire
drawing processes was investigated in two levels - steady-state solve using the
2dimensional rigid-plastic finite element method (macro-level) and modeling of
a microstructure change (micro-level). In macro level the joint
deformation-temperature problem was considered. In micro-level the process of
deformation of representative volume element - RVE was considered. The
pearlitic colony deformation and orientation of cementite lamellas change in
RVE was modeled with help of a FEM. The micro-level model to rigid-plastic
finite element code was implemented. The experimental data of microstructure
and orientation of cementite lamellas change was compared with results of a
simulations. The influence of multi-pass drawing parameters (as friction,
drawing schedule) on orientation of cementite lamellas was investigated.
ISSN0094-243X
--------------------------------------------------------------------------------
Title Numerical modelling of the
metal flow and stock bending during the rolling of unequal angle bar
Author(s) Mroz, S; Milenin, A
Source JOURNAL OF MATERIALS
PROCESSING TECHNOLOGY 177 (1-3): p561-565 2006
Conference Title 11th
International Conference on Metal Forming 2006
Conference Date SEP 11-13, 2006
Conference Location Univ
Birmingham, Birmingham, ENGLAND
Times Cited 3
Abstract The rolling of angle
bars in closed passes is essentially an asymmetrical process. Therefore, it is advisable
to carry out computer simulations of this process in the aspect of stock
bending after exit from the roll gap, which depend on the diameters of both
rolls. This paper presents the possibility of using numerical modelling for
aiding the design of the technology of rolling
ISSN0924-0136
--------------------------------------------------------------------------------
Title Theoretical and
experimental analysis of the rolling process of bimetallic rods Cu-steel and
Cu-Al
Author(s) Dyja, H; Mroz, S;
Milenin, A
Source JOURNAL OF MATERIALS
PROCESSING TECHNOLOGY 153 p100-107 Part 1 2004
Times Cited 9
Abstract In this study, the
authors present the results of their theoretical and experimental analysis of
the rolling process of bimetallic rods in stretching passes. The bimetallic
rods had different ratios of the yield stress between components. The original
rods were round (
ISSN0924-0136
--------------------------------------------------------------------------------
Title Simulation of metal forming
during multi-pass rolling of shape bars
Author(s) Milenin, AA; Dyja, H;
Mroz, S
Source JOURNAL OF MATERIALS
PROCESSING TECHNOLOGY 153 p108-114 Part 1 2004
Times Cited 5
Abstract In this paper, the
mathematical model of the multi-pass rolling is proposed. The problem of
non-isothermal metal forming during multi-pass rolling in grooved rolls had
been solved with using of the finite-element method. As example the computer
modeling results of the angle steel
ISSN0924-0136
--------------------------------------------------------------------------------
Title Theoretical analysis and
optimisation of parameters in extrusion process of explosive cladded bimetallic
rods
Author(s) Milenin, AA; Berski, S;
Banaszek, G; Dyja, H
Source JOURNAL OF MATERIALS
PROCESSING TECHNOLOGY 157 p208-212 2004
Conference Title International
Conference on Achievements in Mechanical and Materials Engineering
Conference Date 2002
Conference Location Gliwice,
POLAND
Times Cited 1
Abstract The article discusses
the problem of theoretical choice of the optimal shape of extrusion die and
extrusion ratio during the extrusion process of aluminium rods copper cladded
with the help of the explosive method to join the core and the coat.
Mathematical model of extrusion process based on finite elements method was
worked out to attaining the objective. The model makes it possible to carry out
the analysis of mechanical state (stress and strain) on the boundary of layers
for the sake of main parameters of the process. Optimal values of process
parameters were obtained basing on the mathematical analysis for bimetallic rod
with outer diameter
ISSN0924-0136
--------------------------------------------------------------------------------
Title 3D Numerical modeling of
thermomechanical processes during continuous casting for shape rolling
Author(s) Milenin, A; Dyja, H;
Mlynarczyk, J
Editor(s) Ghosh, S; Castro, JM;
Lee, JK
Source MATERIALS PROCESSING AND
DESIGN: MODELING, SIMULATION AND APPLICATIONS, PTS 1 AND 2 7121265-1270 2004
Conference Title 8th
International Conference on Numerical Methods in Industrial Forming Processes
Conference Date JUN 13-17, 2004
Conference Location Columbus, OH
Abstract Paper deals with
problems of crystallization, uprising and development of thermal stresses as
well as bending and unbending of workpiece in continues casting machine. To
obtain numeric solution the finite element method is used. The problem is solved
in three-dimensional formulation. Constructive features of continues casting
machine is taken into account, namely location and parameters of rolls, spray
nozzles and crystallization. It is shown an example of casting process for
300x400 mm workpiece of LH15SG steel. The results of dilatometric and
plastometric tests as well as results of temperature, strain and stresses
modeling during casting process are presented in the paper.
ISSN0094-243X
--------------------------------------------------------------------------------
Title Theoretical and
experimental analysis of stress and temperature distributions during the
process of rolling bimetallic rods
Author(s) Dyja, H; Lesik, L;
Milenin, A; Mroz, S
Source JOURNAL OF MATERIALS
PROCESSING TECHNOLOGY 125 p731-735 2002
Conference Title 9th
International Conference on Metal Forming (METAL FORMING 2002
Conference Date SEP 09-11, 2002
Conference Location UNIV
BRIMINGHAM, BIRMINGHAM, ENGLAND
Times Cited 1
Abstract In this study, the
authors present the results of their theoretical and experimental analysis of
the rolling process of bimetallic bars in stretching passes. For the
experimental analysis, a bimetallic bar was manufactured using an explosive
technique method. A numerical model for hot stretching passes rolling was
proposed. The model simulated metal flow during rolling of bimetallic bars in
edge oval-oval series. The original bars were round (
ISSN0924-0136
--------------------------------------------------------------------------------
Title The application of
three-dimensional computer simulation when developing dies for extrusion of
aluminium shapes
Author(s) Milenin, AA; Golovko,
AN; Mamuzic, I
Source METALURGIJA 41 (1):p53-55
2002
Times Cited 3
Abstract The automated system of
three-dimensional computer simulation with use of FEM is developed. The model
is based on the Euler approach. The function of Markov variation principle is
used for derivating. The connected task of thermo-viscous-plasticity is solved.
The flat die is designed for extrusion of the thin-walled shape from a soft
aluminium alloy 6060.
ISSN0543-5846
--------------------------------------------------------------------------------
Title Plastic deformation of metal
particles in gas-dynamic spraying
Author(s) Danchenko, VN; Milenin,
AA; Golovko, AN
Source POWDER METALLURGY AND
METAL CERAMICS 37 (7-8): p351-355 1998
Abstract The main stage of the
gas-dynamic spraying process is the deformation and heating of particles upon
impact with the substrate. A solution of the impact deformation problem by use
of the finite element method is given, The model developed enables
determination of the extent of particle deformation and the time and
temperature of impact as functions of the material and particle properties and
the initial velocity and temperature of particles.
ISSN1068-1302
--------------------------------------------------------------------------------
Title Numerical properties of
finite-element algorithms in the three-dimensional shaping of metals
Author(s) Milenin, AA
Source RUSSIAN METALLURGY (5):
p38-43 1998
Abstract Two rigid-plastic
deformation algorithms are analyzed by the finite-element method: 1) the
algorithm based on a minimum of the Lagrangian functional modified by the
penalty-function method; 2) the algorithm based on a steady state of the
Hermann functional for the fields of the flow rate and the mean hydrostatic
stress, Comparative analysis of these algorithms for three-dimensional shaping
of metals shows that the computational time is reduced to less than half when
the penalty-function method is used, but the quality of solution is
considerably impaired (relative to the second algorithm), This conclusion is
extended to the deformed state and also to the calculation of hydrostatic
stress and the method of satisfying the incompressibility condition.
ISSN0036-0295
--------------------------------------------------------------------------------
Title Mathematical modeling of
the spread of metals with different rheological properties on rolling
Author(s) Milenin, AA
Source RUSSIAN METALLURGY (4):
p64-68 1998
Abstract A three-dimensional
mathematical modeling of roping is proposed, on the basis of the finite-element
method. The model permits the investigation of the appearance of deformational
anomalies in the rolling of theologically complex materials - in particular,
the features of spreading. On the basis of the mathematical experiments, the
conditions of appearance and development of deformational anomalies are
formulated.
ISSN0036-0295
--------------------------------------------------------------------------------
Title Two levels approach to the
problem of steady state extrusion process optimisation
Author(s) Lishnij, AI; Biba, NV;
Milenin, AA
Editor(s) Huetink, J; Baaijens,
FPT
Source SIMULATION OF MATERIALS
PROCESSING: THEORY, METHODS AND APPLICATIONS p627-631 1998
Conference Title 6th
International Conference on Numerical Methods in Industrial Forming Processes
(NUMIFORM 98)
Conference Date JUN 22-25, 1998
Conference Location ENSCHEDE,
NETHERLANDS
Abstract The paper presents
complex approach to extrusion simulation and development. It consists of two
levels. The first level is simplified but fast model of material flow for
preliminary positioning of the orifice on die surface to obtain the most
uniform material flow, The second level is 3D finite element model of
steady-state extrusion that provides further optimisation of process
parameters. First level model is adaptive and can be trained using results of
3D finite element simulation as well as experimental results if they are
available. Both models (simplified and finite element ones) are realised as
integral software product that helps to develop die design much faster.
--------------------------------------------------------------------------------
Title Solving rolling-theory
problems by the boundary-element method
Author(s) Milenin, AA
Source RUSSIAN METALLURGY (5):
p45-52 1997
Abstract A new approach to
steady-rolling problems is proposed, on the basis of the boundary-element
method. The nonlinearity of the medium is taken into account by dividing the
deforming metal into linearly ductile zones. The contact stress is calculated
for different rolling conditions, and the results obtained are compared with
experimental data and the Chekmarev analytical solution. The agreement is
satisfactory.
ISSN0036-0295
--------------------------------------------------------------------------------
Title Comparative analysis of
boundary and finite element method possibilities in simulation of metal working
processes
Author(s) Milenin, AM
Source RUSSIAN METALLURGY (2):
p64-71 1997
Abstract A new mathematical model
for working processes of metals with a nonlinear rheology pattern has been
developed based on a boundary element method, This approach allows a
substantial increase in computing accuracy as compared with a widely used
finite element method, particularly, in definition of expressions. Problems of
plane setting and deformation of dual-phase materials have been solved which
demonstrate the advantages of this model over Finite element models.
ISSN0036-0295
--------------------------------------------------------------------------------
Title Effect of tool speed on
metal forming in mechanical working
Author(s) Milenin, AA
Source RUSSIAN METALLURGY (1):
p73-76 1997
Abstract The problem of an effect
of tool speed on forming of metal with different flow propel-ties has been
examined on the basis on a finite element method with allowance for mass loads,
It has been demonstrated that at a setting speed of > 10 m/s strain tends to
be localized near the contact surface which brings about more intensive contact
slip, It has been shown theoretically that mechanism of metal forming in
high-speed setting cannot be explained only from rheological or tribological
viewpoints.
ISSN0036-0295
--------------------------------------------------------------------------------
Title A mathematical model of the
formation of the plastic deformation zone in the rolling of rheologically
complex metals and alloys
Author(s) Slomchack, GD; Milenin,
AA; Mamuzic, I; Vodopivec, F
Source JOURNAL OF MATERIALS
PROCESSING TECHNOLOGY 58 (2-3): p184-188 1996
Abstract A new mathematical model
of the plastic deformation zones in the rolling of theologically complex metals
and alloys has been developed on the basis of the finite-element method. The
rheological curves are considered through hydrodynamic approximations. The
model can be used for the calculation of the formation of knurling during
cogging. The appearance of the knurl and the means of its prevention are
modelled. The results of the model are in good agreement with experimental findings.
ISSN0924-0136
--------------------------------------------------------------------------------
Title Analysis of the
stress-strain state in the region of an inclusion of a second phase during
plastic working of two-phase composite materials
Author(s) Milenin, AA
Source STEEL IN TRANSLATION 25
(10): p42-47 1995
ISSN0967-0912
--------------------------------------------------------------------------------
Title A general
plastic-deformation simulation for two-phase materials with the aid of boundary-elements
method
Author(s) Milenin, AA
Source METALLOFIZIKA I NOVEISHIE
TEKHNOLOGII 17 (12): p46-52 1995
Abstract A new mathematical model
of nonstationary processes of multiphase materials deformation has been
developed in this article. The model integrates the ideas both the
boundary-elements method and finite-element method. A main advantage of
proposed model is greaer accuracy of stress determination and incompressibility
account in comparison with a tradition based on the finite-elements method algorithms.
An effect of an accuracy rise is more strongly exhibited if such stress
concentrators as inclusions are presented in a research region. Model
possibilities have been demonstrated in tasks for calculation of stressed state
on interface (phase boundary) and during simulation of lamination
(stratification) of matrix and inclusion.
ISSN0204-3580
--------------------------------------------------------------------------------
Title Theoretical analysis of the
stress-strain state in the region of the inclusion of second phase under
plastic deformation of two-phase materials
Author(s) Milenin, AA
Source RUSSIAN METALLURGY (2):
p97-103 1995
Times Cited 2
Abstract A mathematical model is
proposed to describe the evolution of stresses and strains around the inclusion
of a second phase in a uniform matrix under plastic deformation of two-phase
materials. The problem is solved in the two-dimensional formulation by the
method of finite elements. The behavior of inclusions of bound and square cross
section for various combinations of reological properties of the inclusion and
matrix is investigated. The attendant problem of calculating the evolution of
cavity in a metal under strong plastic deformation is also considered.
ISSN0036-0295
--------------------------------------------------------------------------------
Title STUDY OF MECHANISM OF
SPREAD IN SETTING USING FINITE-ELEMENT METHOD
Author(s) MILENIN, AA
Source STEEL IN TRANSLATION 24
(12): p18-20 1994
ISSN0967-0912
Important
publications
1.
Миленин
А.А. Анализ
механизма
уширения при осадке
с помощью
метода
конечных
элементов //
Изв. ВУЗов.
Черная
металлургия.
–1994. – № 12. – С. 19–21.
2.
Миленин
А.А.
Моделирование
больших
пластических
деформаций
двухфазных
материалов с
помощью метода
граничных
элементов //
Металлофизика
и новейшие
технологии. –
1995. – №12. – С. 46–52.
3.
Миленин
А.А. Анализ
напряженно-деформированного
состояния в
районе
включения
второй фазы
при
обработке
давлением
двухфазных
композиционных
материалов //
Изв. ВУЗов.
Черная
металлургия.
– 1995. – №10. – С. 13–16.
4.
Миленин
А.А.
Теоретический
анализ
напряженно-деформированного
состояния в
области
включения
второй фазы
при
обработке
давлением
двухфазных
материалов //
Изв. РАН. Металлы.
–1995. – №2.– С. 108–114. (Milenin A. A.;
"Theoretical analysis of the stress strain state in the region of the
inclusion of second phase under plastic deformation of two phases
materials"; Russian Metallurgy, 2, 1995, 97-103. )
5.
Zilberg Yu.V.
Milenin A.A. Study of Transformations of Surface Cavities During Upsetting //
Доповіді НАН
України. – 1996. –
№ 1. – С. 61–63.
6.
Миленин
А.А.
Математическое
моделирование
процесса
протяжки в
вырезных
бойках // Кузнечно-штамповочное
производство.
– 1996. – №11. – С. 2–5.
7.
Slomchack G.G.,
Milenin A.A., Mamuzitch I., Vodopivec F. A Mathematical Model of the Process of
Plastic Deformation Zone Forming
for Rolling of Rheologically Complex Metals and Alloys // Journal of Materials
Processing Technology. – Elsevier. – 1996. – №58.
– P. 184–188.
8.
Миленин
А.А. Сравнительный
анализ
возможностей
метода граничных
элементов и
метода
конечных
элементов
при
математическом
моделировании
процессов
обработки
металлов
давлением //
Изв. РАН.
Металлы.– 1997. –
№2. – С. 65–72. (Milenin A. COMPARATIVE ANALYSIS OF
BOUNDARY AND FINITE ELEMENT METHOD POSSIBILITIES IN SIMULATION OF METAL WORKING
PROCESSES, Russian metallurgy. Metally ISSN 0036-0295, 1997, no2, pp.
64-71 [8 page(s) (article)], Allerton Press, London, ROYAUME-UNI )
9.
Миленин
А.А.
Применение
метода
граничных элементов
для решения
некоторых
задач теории
прокатки //
Изв. РАН.
Металлы. –1997. –
№5. – С. 43–48. (Milenin A. SOLVING ROLLING-THEORY
PROBLEMS BY THE BOUNDARY-ELEMENT METHOD, Russian metallurgy. Metally ISSN 0036-0295, 1997, no5, pp.
45-52 [8 page(s) (article)] Allerton Press, London, ROYAUME-UNI)
10.
Миленин
А.А. О влиянии
скорости
движения инструмента
на
формоизменение
металла в процессе
обработки
давлением //
Изв. РАН. Металлы.
– 1997. – №1. – С. 91–94.
11.
Миленин
А.А. О
реализации
граничных
условий в
напряжениях
при
моделировании
процесса
прокатки
методом
граничных
элементов //
Изв. ВУЗов.
Черная металлургия.
– 1997. – №4. – С. 28–31.
12.
Миленин
А.А.
Математическое
моделирование
деформационных
аномалий,
возникающих
в процессах
обработки
металлов
давлением // Доповіді
НАН України.
– 1997. – №3. – С. 46–52.
13.
Миленин
А.А.
Исследование
с помощью
математической
модели
процесса
уширения при
прокатке
металлов с
разными
реологическими
свойствами //
Изв. РАН.
Металлы. – 1998. –
№4. – С. 48–51. (Milenin A. MATHEMATICAL MODELING OF THE
SPREAD OF METALS WITH DIFFERENT RHEOLOGICAL PROPERTIES ON ROLLING Russian
metallurgy. Metally
ISSN0036-0295 1998, no4, pp. 65-68 [4 page(s) (article)] Allerton Press,
London, ROYAUME-UNI)
14.
Миленин
А.А.
Исследование
численных
свойств
алгоритмов
метода
конечных
элементов
применительно
к трехмерным
задачам
обработки
металлов давлением
// Изв. РАН.
Металлы. – 1998.–
№5.– С. 33–37 (Milenin A.A. NUMERICAL PROPERTIES OF
FINITE-ELEMENT ALGORITHMS IN THE THREE-DIMENSIONAL SHAPING OF METALS, Russian
metallurgy. Metally ISSN
0036-0295, 1998, no5, pp. 38-43 [6 page(s) (article)] Publisher: Allerton
Press, London, ROYAUME-UNI)
15.
Данченко
В.Н., Миленин
А.А. Головко
А.Н. Пластическое
деформирование
металлических
частиц при
газодинамическом
напылении //
Порошковая
металлургия.
–1998. – № 7–8. – С. 10–15.
16.
Зильберг
Ю.В. Миленин
А.А.
Теоретическое
и экспериментальное
исследование
формоизменения
поверхностных
впадин при
прокатке //
Изв. Вузов.
Черная
металлургия.
–1998. – №11. – С. 27–29.
17.
Lishnij A.I., Biba
N.V. Milenin A.A. Two levels approach to the problem of extrusion optimization
// Simulation of Materials Processing: Theory, Methods and Applications.
Proceedings of the 7 Int. Conf. On Numerical Methods in Industrial Forming
Processes. – Enschede (Netherlands). –1998. – P.
627–631.
18.
Миленин
А.А.
Математическое
моделирование
и решение
технологических
задач прессования
фасонных
профилей //
Сталь. – 1999. – №8.–
С. 57–60.
19.
Миленин
А.А.
Математическое
моделирование
влияния
параметров
рабочих
поясков на течение
металла при
прессовании
//
Металлургическая
и горнорудная
промышленность.–
2000.– №1. – C. 34–37.
20.
Миленин
А.А.
Математическое
моделирование
операций по
корректировке
матриц для
прессования
профилей //
Металлургическая
и
горнорудная
промышленность.
– 2000.– № 2. – C. 64–66.
21.
Миленин
А.А.
Компьютерный
анализ
особенностей
формирования
уширения при
прокатке полосы
неравномерного
поперечного
сечения //
Металлургическая
и
горнорудная
промышленность.
– 2000. – № 8–9. – С. 88–90
22.
Lesniak D., Libura
W., Pidvysotskyy V., Milenin A. Influence of Pre-chamber Die Geometry on
Extrusion of Solid Sections with Different Wall Thickness // Proc. of 5th Int.
ESAFORM Conf. on Material Forming. – Krakow, 2002. P. 245–249.
23.
Milenin A. Golovko
A.N., Mamuzic I. The application of three-dimensional computer simulation when
developing dies for extrusion of aluminium shapes // Metallurgija 41, №1,
2002, p.53-55
24.
Dyja H., Lesik L.,
Mroz S., Milenin A. Theoretical and experimental analysis of stress and
temperature distribution during the process of rolling bimetallic rods//
Journal of Materials and Processing Technology 125/126, 2002, p.731–735.
25.
Milenin A.
Modelowanie numeryczne procesów wyciskania profili z zastosowaniem
gęstości dyslokacji jako
zmiennej wewnętrznej w modelu reologicznym materiału//
Informatyka w Technologii Materiałów .- No
1, Tom 2, 2002, s. 26-33.
26.
Milenin A., Dyja
H., Lesik L. Program komputerowy do analizy trójwymiarowego
płynięcia metalu podczas walcowania w wykrojach // Hutnik #1, 2003,
S. 20-24.
27.
Milenin A., Dyja H.,
Janik M., Lapenko S., Koczurkiewicz B. Three-dimensional modelling of steel
ingot rolling with semi-solid core // Proc. 6th ESAFORM Conf. on Material
Forming, Salerno, Italy, April 28-30, 2003, P. 323-326.
28.
Milenin A., Dyja
H., Muskalski Z., Pilarczyk J. FEM analysis of a multi-pass hydrodynamic
drawing process of high carbon steel wires with different drawing directions //
Journal of Steel and Related Materials, September 2004, P. 203-208.
ISSN1611-4442.
29.
Milenin A., Dyja
H. 3D FEM analysis and optimization of metal forming and temperature
development during multi-pass rolling of the round shape// Journal of Steel and
Related Materials, September 2004, P.417-422. ISSN1611-4442.
30.
Mroz S., Milenin
A., Dyja H. Numerical modeling of stock stability in the roll grooves during
shape rolling // Journal of Steel and Related Materials, September 2004,
P.97-102. ISSN1611-4442.
31.
Mroz S., Milenin
A., Dyja H. A determination of the total roll separating force during rolling
of bimetal rods in the groovs // Journal of Steel and Related Materials,
September 2004, P.85-92. ISSN1611-4442.
32.
Milenin A., Dyja
H. Numerical modeling of thermomechanical processes during continues casting of
steel LH15SG for shape rolling // Journal of Steel and Related Materials,
September 2004, P.573-578. ISSN1611-4442.
33.
Milenin A.A.,
Berski S., Banaszek G., Dyja H. Theoretical analysis and optimization of
parameters in extrusion process of explosive cladded bimetallic rods // Journal
of Materials Processing Technology, 157-158 (2004), p. 202-212.
34.
Milenin A. Program
komputerowy Drawing2d – narzędzie do analizy procesów
technologicznych ciągnienia wielostopniowego // Hutnik, No 2, 2005. - s.
100-104.
35.
Kawalek A.,
Milenin A., Dyja H. Analysis of the Effect of Die Shape on the State of Strain
in the Process of Extrusion of Thin-Walled Aluninium Sections // Metallurgy,
2005, vol. 44, #2, p. 103-107, ISSN0543-5846, Croatia.
36.
Pidvisocki V.,
Pietrzyk M., Milenin A. Związek współczynnika Lodego
charakteryzującego stan naprężenia w materiale z krzywą
umocnienia // Rudy i Metale Nieżelazne, 2005, #10-11, S. 572-576.
37.
A.Milenin, H.Dyja,
Z.Muskalski, J.Pilarzyk 3-D FEM analysis of roller die and hydrodynamic drawing
of high carbon steel wires // Wire Journal Int., 2005, #12, P. 54-59.
38.
Muskalski Z.,
Milenin A., Pilarczyk J. Comparing hydrodynamic and conventional wire drawing
// Wire Industry, # 10, 2005, P. 331-335.
39.
S.Mroz, A.Milenin
Numerical modelling of the metal flow and stock bending during the rolling of
unequal angle bar // J. Mat. Proc. Techn., 177, (2006), p. 561-565.
40.
A.Milenin,
Z.Muskalski Multi-scale FEM simulation of the drawing process //Computer
Methods in Materials Science, Vol. 7, 1 (2007) 156-161.
44.
Pikos B.,
Michalczyk J., Kranc J., Milenin A., Pilarczyk J.W. Wpływ kształtu
części roboczej i kalibrującej ciągadła na silę
ciągnienia oraz własności mechaniczne drutów
okrągłych // Hutnik, Nr 1-2, (2007), s. 78-81.
45.
MILENIN, Z.
Muskalski, S. Wiewiórowska, P. KUSTRA The multi-scale FEM simulation of
the drawing processes of high carbon steel // Journal of Achievements in
Materials and Manufacturing Engineering ; ISSN1734-8412. — 2007 vol. 23
iss. 2 s. 71–74. — Bibliogr. s. 74, Abstr.
46.
M.Kwapisz,
D.Svyetlicznyy, A.Milenin Badania doświadczalne wpływu temperatury
walcowania na własności mechaniczne taśm aluminiowych w procesie
walcowania pakietowego ARB// Rudy i metale nieżelazne, (52), No 5, 2007,
s. 272-275.
48. A.Milenin, T.Rec A coupled FEM model of
macrosegregation and stress-strain state formation in ingot during continuous
casting with mechanical soft reduction // Steel Research International. —
Tyt. poprz.: Steel Research 79(2008) spec. ed. s. 603–610. —
Bibliogr. s. 610, Abstr.. —
Metal Forming 2008 : proceedings of the 12th international conference on Metal
Forming : Kraków, Poland, September 21–24.2008, Vol. 2;
ISSN1611_3683.
50. M.Kopernik, A.Milenin Sensitivity analysis of
nanoindentation test for specimen composed of TiAlN and TiN using mathematical
model // Steel Research International. - Tyt. poprz.: Steel Research; -
79(2008) spec. ed. s. 555–562. - Bibliogr. s. 562, Abstr. - Metal Forming 2008 : proceedings of the 12th
international conference on metal Forming : Kraków, Poland, September
21.–24.2008, Vol. 2 / eds. Maciej Pietrzyk, [et al.]. —
Düsseldorf: Verlag Stahleisen GmbH, cop. 2008 + CD-ROM, ISSN1611_3683.
52.
P.Kustra,
A.Milenin, M.Schaper, O.Grydin MULTISCALE MODELING AND INTERPRETATION OF
TENSILE TEST OF MAGNESIUM ALLOY IN MICROCHAMBER FOR THE SEM// Computer Methods
in Materials Science, Vol. 9, 2009, No.2, p. 207-214.
53.
T.Rec, A.Milenin
The 3d numerical model of macrosegregation in steel ingot during continuous
casting with soft reduction // Computer Methods in Materials Science, Vol. 9,
2009, No.2, p. 215-220.
54.
M.KOPENIK,
A.MILENIN Symulacja próby wciskania wgłębnika dla układu
twardych nanopowłok — Simulation of nanoindentation test for system
of hard nanocoatings // Rudy i Metale Nieżelazne ; ISSN0035-9696. —
2009 R. 54 nr 1 s. 14–17. — Bibliogr. s. 17
55.
Numeryczna analiza
zjawiska pękania drutu ze stopu magnezu w procesie ciągnienia na
zimno — The numerical analyze of wire fracture phenomena during cold
drawing of magnesium alloy / Andrzej MILENIN, Piotr KUSTRA // Rudy i Metale
Nieżelazne ; ISSN0035-9696. — 2009 R. 54 nr 1 s. 10–13.
— Bibliogr. s. 13
56.
Milenin, M.
Kopernik, The muliscale FEM model of artificial heart chamber composed of
nanocoatings, //Acta of Bioengineering and Biomechanics, 11, 2, 2009, 13-20
57.
MILENIN, W.
WALCZYK, M. PIETRZYK NUMERYCZNA ANALIZA PROCESU KUCIA WAŁÓW
KORBOWYCH// RUDY I METALE NIEŻELAZNE
2009-11.
58.
Milenin, F.
Grosman, L. Madej, J. Pawlicki FEM simulation of rolling process with cyclic
horizontal movement of rolls // Steel Research International; ISSN1611-3683.
(2010), steel research international Volume 81 Issue 3, Pages 204 – 209
(5)
59.
F.
Nürnberger, O. Grydin, M. Schaper, F.-W. Bach, B. Koczurkiewicz, A.
Milenin Microstructure Transformations in Tempering Steels during Continuous
Cooling from Hot Forging Temperatures// Steel Research International (2010)
Volume 81 Issue 3, Pages 224 – 233 (10)
60.
Z. Muskalski, A.
MILENIN Development of finite element model of reorientation of cementite
lamellae in pearlite colonies in wire drawing process for wires made from high
carbon steel // Solid State Phenomena; ISSN1012-0394 . — 2010 vol. 165 s.
136–141. — Bibliogr. s. 140–141, Abstr.
61.
MILENIN, P. KUSTRA
Modelowanie procesu ciągnienia drutów ze stopów magnezu o
podwyższonej biozgodności — Modelling of wire drawing process
of high biocompatibility magnesium alloys // Hutnik Wiadomości Hutnicze;
ISSN1230-3534, 2010 R. 77 nr 4, Dzień Hutnika 2010 s. 176–181.
62.
MILENIN, D. J.
BYRSKA, P. KUSTRA, T. Heidenblut, O. Grydin, M. Schaper Modelowanie mechanizmu
utraty spójności stopu MgCa0,8 w procesie odkształcania na
zimno — A model of ductility thenomena of MgCa0,8 alloy in cold forming
process // Rudy i Metale Nieżelazne ; ISSN0035-9696. — 2010 R. 55 nr
4 s. 200–208. — Bibliogr. s. 207–208
63.
M. Kopernik, A.
Milenin, R. Major, J.M. Lackner, Application of mathematical model, numerical
methods and nanoindentation tests to identification of material model of TiN,
Materials Science and Technology, 2010 (0.713 IF) (in press)
Books:
Milenin
A. Podstawy
Metody Elementów Skończonych, AGH, 2010.
W.I.Timoszpolskij, H.Dyja,
I.A.Trusowa, L.Szecówka, A.A.Milenin, I.A.Pawluczenkow, A.B.Stieblow,
D.N.Andrianow Wymiana ciepła w piecach przemysłowych // Wyd.
Politechniki Częstochowskiej, Częstochowa, 2006, 280 s.
В.Б.Охотський,
В.М.Ковшов,
А.Г.Кучер,
Миленин А.А.,
та інші
Моделювання
та
оптимальні
металургійні
системи //
Навчальний
посібник /– К.:
ІЗМН, 1998. 156 с.
Danchenko V., Dyja H., Lesik
L. Maskin L. Milenin A. Technologia i modelowanie procesów walcowania w
wykrojach. - Częstochowa:
Wydawnictwo WIMPIFS PCZ, 2002. – 598 s.
В.Н.Данченко,
Миленин А.А.,
А.Н.Головко
Производство
профилей из
алюминиевых
сплавов.
Теория и
технология. -
Днепропетровск:
«Системные
технологии»,
2002. – 448 с.
Миленин
А.А.
Математичне
моделювання
процесiв
обробки
металiв
тиском. -
Навчальний
посiбник.
Днiпропетровськ:
НМетАУ, 2002. – 60 с.
Данченко
В.Н., Миленин
А.А.,
Кузьменко
В.И., Гринкевич
В.А.
Компьютерное
моделирование
процессов
обработки
металлов
давлением.
Численные
методы. –
Днепропетровск:
«Системные
технологии»,
2005, - 448 с.