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Thermo-Mechanical Multiscale Modeling in Plasticity of Metals Using Small Strain Theory

Published online by Cambridge University Press:  25 May 2017

N. Munjas ,
M. Čanađija  and
J. Brnić
N. Munjas*
Affiliation:
Department of Engineering MechanicsFaculty of EngineeringUniversity of RijekaRijeka, Croatia
M. Čanađija
Affiliation:
Department of Engineering MechanicsFaculty of EngineeringUniversity of RijekaRijeka, Croatia
J. Brnić
Affiliation:
Department of Engineering MechanicsFaculty of EngineeringUniversity of RijekaRijeka, Croatia
*
*Corresponding author (nmunjas@riteh.hr)
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Abstract

A numerical coupled thermoplasticity multiscale procedure for small strain analysis is developed in the finite element environment. It is suitable for simulation of thermo-mechanical behavior and overall response of metallic materials, using standard approximation method based on the concept of representative volume element (RVE). The local level isothermal analysis that models the micro-scale, is fully coupled to the global level non-isothermal analysis. The global macro-scale tangent stiffness operator is obtained using numerical differentiation procedure using the forward difference scheme. The numerical procedure is developed for two-dimensional problems, using Abaqus user-defined subroutines. Applicability of the proposed framework is presented on several representative examples.

Keywords

Multiscale modelingSmall-strain theoryCoupled thermo-mechanical analysisThermo-plasticity
Type
Research Article
Information
Journal of Mechanics , Volume 34 , Issue 5 , October 2018 , pp. 579 - 589
Copyright
Copyright © The Society of Theoretical and Applied Mechanics 2018 

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