Use of advanced kinematic hardening rules for prediction of multiaxial ratcheting

0551689 - ÚT 2022 RIV CZ eng C - Conference Paper (international conference)
Klepač, Vilém - Parma, Slavomír - Feigenbaum, H. P. - Marek, René - Plešek, Jiří - Svárovský, Jiří
Use of advanced kinematic hardening rules for prediction of multiaxial ratcheting.
Computational mechanics 2021. Proceedings of computational mechanics 2021. Plzeň: University of West Bohemia, 2021 - (Adámek, V.; Jonášová, A.; Plánička, S.; Zajíček, M.), s. 111-114. ISBN 978-80-261-1059-0.
[Computational Mechanics 2021 /36./. Srní (CZ), 08.11.2021-10.11.2021]
Institutional support: RVO:61388998
Keywords : plasticity * ratcheting * low-cycle fatigue
OECD category: Applied mechanics
https://www.kme.zcu.cz/compmech/info_sborniky.php

The cumulation of plastic deformation due to cyclic loading, so called ratcheting, is considered as critical process for purpose of simulation. For this reason, many of advanced models of plasticity have been developed to capture the evolution of material during the load reversals. Historically, these models are based on concept of multicomponent back-stress, that provides the prediction of phenomenon of kinematic hardening (KH) [Chaboche 1979]. The key for accurate prediction is, besides well designed model, identification of model parameters. To present results on prediction of multiaxial ratcheting by FEA, the multicomponent Armstrong-Frederick with a threshold with r Modification was implemented via the UMAT interface of Abaqus Standart. Model parameters were identified on experimental data presented in [Hassan, Kyriakides 1992] and [Hassan et. al. 1992]. To prove the performance of the model subroutine, other numerical examples will be presented and their computational costs will be discussed.
Permanent Link: http://hdl.handle.net/11104/0327003