Modelling Thermo‐Viscoplasticity of Case‐Hardening Steels Over Wide Temperature Ranges
(2018) GAMM Annual Meeting, 2018 18. p.201800199-201800199- 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 data for case... (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:
https://lup.lub.lu.se/record/24cbbe26-00f8-46ad-a57a-f787d17df22f
- author
- Oppermann, Philip LU ; Denzer, Ralf LU and Menzel, Andreas LU
- organization
- publishing date
- 2018-12-17
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Thermoplasticity, Finite element (FE) numerical modeling, Thermodynamics, Thermomechanics, Thermo-mechanical processes
- host publication
- Procedings in Applied Mathematics and Mechanics
- volume
- 18
- pages
- 2 pages
- publisher
- Wiley-VCH Verlag
- conference name
- GAMM Annual Meeting, 2018
- conference location
- Munich, Germany
- conference dates
- 2018-03-19 - 2018-03-23
- DOI
- 10.1002/pamm.201800199
- language
- English
- LU publication?
- yes
- id
- 24cbbe26-00f8-46ad-a57a-f787d17df22f
- date added to LUP
- 2019-10-24 13:29:09
- date last changed
- 2022-02-14 12:22:09
@inproceedings{24cbbe26-00f8-46ad-a57a-f787d17df22f, 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 data for case hardening steel 16MnCr5 (1.7131).}}, author = {{Oppermann, Philip and Denzer, Ralf and Menzel, Andreas}}, booktitle = {{Procedings in Applied Mathematics and Mechanics}}, keywords = {{Thermoplasticity; Finite element (FE) numerical modeling; Thermodynamics; Thermomechanics; Thermo-mechanical processes}}, language = {{eng}}, month = {{12}}, pages = {{201800199--201800199}}, publisher = {{Wiley-VCH Verlag}}, title = {{Modelling Thermo‐Viscoplasticity of Case‐Hardening Steels Over Wide Temperature Ranges}}, url = {{http://dx.doi.org/10.1002/pamm.201800199}}, doi = {{10.1002/pamm.201800199}}, volume = {{18}}, year = {{2018}}, }