Finite-strain thermo-viscoplasticity for case-hardening steels over a wide temperature range

Forskningsoutput: Kapitel i bok/rapport/Conference proceedingKonferenspaper i proceeding

Abstract

The aim of this work is the development of a thermodynamically consistent fully coupled finite-strain 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).

Detaljer

Författare
Enheter & grupper
Externa organisationer
  • Institute of Mechanics,Technical University of Dortmund
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Teknisk mekanik
  • Metallurgi och metalliska material

Nyckelord

Originalspråkengelska
Titel på värdpublikationProceedings in Applied Mathematics & Mechanics
FörlagWiley-VCH Verlag
Sidore201900237
Antal sidor2
Volym19
StatusPublished - 2019 nov 18
PublikationskategoriForskning
Peer review utfördJa
EvenemangGAMM Annual Meeting, 2019 - TU Wien, Vienna, Österrike
Varaktighet: 2019 feb 182019 feb 22
Konferensnummer: 90
https://jahrestagung.gamm-ev.de/index.php/2019/2019-annual-meeting

Konferens

KonferensGAMM Annual Meeting, 2019
LandÖsterrike
OrtVienna
Period2019/02/182019/02/22
Internetadress

Relaterad forskningsoutput

Philip Oppermann, Ralf Denzer & Andreas Menzel, 2019 feb 21, s. 277-278. 2 s.

Forskningsoutput: KonferensbidragKonferensabstract

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