An endochronic plasticity formulation for filled rubber

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:47

Article

Netzker, Christiane¹  Dal, Huesnue¹  Kaliske, Michael¹ 

[1] Tech Univ Dresden, Inst Struct Anal, D-01062 Dresden, Germany

关键词: Endochronic plasticity;    Finite elastoplasticity;    Filled rubber;    FEM;   

DOI  :  10.1016/j.ijsolstr.2010.04.026

来源: Elsevier

【 摘 要 】

The nature of elastomeric material demands the consideration of finite deformations, nonlinear elasticity including damage as well as rate-dependent and rate-independent dissipative properties. While many models accounting for these effects have been refined over time to do better justice to the real behavior of rubber-like materials, the realistic simulation of the elastoplastic characteristics for filled rubber remains challenging. The classical elastic-ideal-plastic formulation exhibits a distinct yield-surface, whereas the elastoplastic material behavior of filled rubber components shows a yield-surface free plasticity. In order to describe this elastoplastic deformation of a material point adequately, a physically based endochronic plasticity model was developed and implemented into a Finite Element code. The formulation of the ground state elastic characteristics is based on Arruda and Boyce (1993) eight-chain model. The evolution of the constitutive equations for the nonlinear endochronic elastoplastic response are derived in analogy to the Bergstrom-Boyce finite viscoelasticity model discussed by Dal and Kaliske (2009). (C) 2010 Elsevier Ltd. All rights reserved.

【 授权许可】

Free