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On the Modelling of Thermo-Viscoplasticity of Case-Hardening Steels Over a Wide Temperature Range

Oppermann, Philip LU ; Denzer, Ralf LU and Menzel, Andreas LU (2018) In Proceedings in Applied Mathematics and Mechanics 17(1). p.447-448
Abstract
The aim of this work is the development of a thermodynamically consistent fully coupled thermo-viscoplastic material model for metals.
The model is based on a split of the free energy into a thermo-elastic, a thermo-plastic and a purely thermal part and covers nonlinear cold-work hardening and thermal softening.
Nonlinear temperature dependent effects are accounted for the elastic moduli, the plastic hardening moduli, the thermal expansion, the heat capacity and the heat conductivity.
Furthermore, strain rate-dependency of the current yield stress is realized using a temperature dependent nonlinear Perzyna type viscoplastic model based on an associative flow rule.
The model and its parameters are fitted against experimental... (More)
The aim of this work is the development of a thermodynamically consistent fully coupled thermo-viscoplastic material model for metals.
The model is based on a split of the free energy into a thermo-elastic, a thermo-plastic and a purely thermal part and covers nonlinear cold-work hardening and thermal softening.
Nonlinear temperature dependent effects are accounted for the elastic moduli, the plastic hardening moduli, the thermal expansion, the heat capacity and the heat conductivity.
Furthermore, strain rate-dependency of the current yield stress is realized using a temperature dependent nonlinear Perzyna type viscoplastic model based on an associative flow rule.
The model and its parameters are fitted against experimental data for case hardening steel 16MnCr5 (1.7131). (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Thermoplasticity, Viscoplasticity, Thermomechanical, finite element implementation of coupled problems
in
Proceedings in Applied Mathematics and Mechanics
editor
Könke, Carsten; Trunk, Carsten; and
volume
17
issue
1
pages
2 pages
publisher
Wiley-VCH
ISSN
1617-7061
DOI
10.1002/pamm.201710193
language
English
LU publication?
yes
id
c574fa23-313c-40a3-a6ab-aa97373684e8
date added to LUP
2018-03-27 11:33:28
date last changed
2018-04-03 09:41:19
@inproceedings{c574fa23-313c-40a3-a6ab-aa97373684e8,
  abstract     = {The aim of this work is the development of a thermodynamically consistent fully coupled thermo-viscoplastic material model for metals.<br/>The model is based on a split of the free energy into a thermo-elastic, a thermo-plastic and a purely thermal part and covers nonlinear cold-work hardening and thermal softening.<br/>Nonlinear temperature dependent effects are accounted for the elastic moduli, the plastic hardening moduli, the thermal expansion, the heat capacity and the heat conductivity.<br/>Furthermore, strain rate-dependency of the current yield stress is realized using a temperature dependent nonlinear Perzyna type viscoplastic model based on an associative flow rule.<br/>The model and its parameters are fitted against experimental data for case hardening steel 16MnCr5 (1.7131).},
  author       = {Oppermann, Philip and Denzer, Ralf and Menzel, Andreas},
  booktitle    = {Proceedings in Applied Mathematics and Mechanics},
  editor       = {Könke, Carsten and Trunk, Carsten},
  issn         = {1617-7061},
  keyword      = {Thermoplasticity,Viscoplasticity,Thermomechanical,finite element implementation of coupled problems},
  language     = {eng},
  month        = {03},
  number       = {1},
  pages        = {447--448},
  publisher    = {Wiley-VCH },
  title        = {On the Modelling of Thermo-Viscoplasticity of Case-Hardening Steels Over a Wide Temperature Range},
  url          = {http://dx.doi.org/10.1002/pamm.201710193},
  volume       = {17},
  year         = {2018},
}