A new material model of finite strain metal creep is proposed. Transient effects occurring shortly after abrupt changes of the applied stress are captured by the model using the concept of nonlinear kinematic hardening. The evolution of the backstress tensor is affected by the static and dynamic recovery. In order to broaden the applicability range, the model includes the classical Kachanov‐Rabotnov damage evolution. Large strain kinematics is described using the assumption of a nested multiplicative split. The model is thermodynamically consistent, objective, and w‐invariant. The model is validated in MSC.MARC, basing on experimental data for the D16T aluminium alloy. (© 2017 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Proceedings in Applied Mathematics & Mechanics – Wiley
Published: Jan 1, 2017
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