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The Influence of Non-Dissipative Quantities in Kinematic Hardening Plasticity

机译：非耗散量对运动硬化塑性的影响

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A kinematic hardening plasticity model valid for finite strains is presented. The model is based on the well-known multiplicative split of the deformation gradient into an elastic and a plastic part. The basic ingredient in the formulation is the introduction of locally defined configurations-center configurations-which are associated with deformation gradients that are used to characterize the kinematic hardening behavior. One of the aspects of the model investigated here is found when the plastic and kinematic hardening evolution laws are split into two parts: a dissipative part, which is restricted by the dissipation inequality, and a non-dissipative part, which can be chosen without any thermodynamical considerations. To investigate the predictive capabilities of the proposed formulation, the simple shear problem and torsion of a thin-walled cylinder are considered. In the numerical examples it turns out that the non-dissipative quantities affect the response to a large extent and are consequently valuable ingredients in the formulation when representing real material behavior.
机译：建立了适用于有限应变的运动硬化塑性模型。该模型基于众所周知的将变形梯度分成弹性部分和塑性部分的乘法分解。配方中的基本成分是引入局部定义的构型-中心构型-这些构型与用于表征运动硬化行为的变形梯度相关。当将塑性和运动硬化演变规律分为两部分时，发现了此处研究的模型的一个方面：受耗散不等式限制的耗散部分和无耗散部分，可以无任何选择热力学考虑。为了研究所提出配方的预测能力，考虑了薄壁圆筒的简单剪切问题和扭转。在数字示例中，事实证明，非耗散量在很大程度上影响响应，因此在代表实际材料行为时是配方中的宝贵成分。

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