A geometrically nonlinear micromorphic damage‐plasticity model
A geometrically nonlinear micromorphic damage‐plasticity model
复制标题
几何非线性微形损伤塑性模型
DOI：
10.1002/pamm.201900294
复制
发表时间：
2019
期刊：
影响因子：
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通讯作者：
Wulfinghoff
中科院分区：
文献类型：
--
作者：
Brepols;Wulfinghoff
本文基于Forest [4]意义下的细观方法，提出了一种新的梯度扩展的“双面”损伤塑性大变形模型。本文讨论了微态（即微态）的附加偏微分方程。例如，“非局部”）损伤变量（通常需要在梯度扩展材料模型中求解）可以基于虚功原理的扩展形式，通过假设作用在物体内部的附加“广义”应力，以自然的方式导出。正如作者最近所表明的那样（见[3]），该模型能够适当地抵消传统的“局部”模型涉及损伤的众所周知的网格依赖问题。
The present article is concerned with a novel gradient‐extended ‘two‐surface’ damage‐plasticity model for large deformations which is based on the micromorphic approach in the sense of Forest [4]. It is discussed how the additional partial differential equation for the micromorphic (i. e., ‘nonlocal’) damage variable – which typically needs to be solved in case of gradient‐extended material models – can be derived in a natural way on the basis of an extended form of the principle of virtual work by assuming additional ‘generalized’ stresses that act within the body. As was shown recently by the authors (see [3]), the model is able to suitably counteract the well‐known mesh‐dependence problem of conventional ‘local’ models involving damage.
DOI：
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发表时间：
2018
期刊：
影响因子：
--
作者：
J. Soric;P. Wriggers;O. Allix
通讯作者：
O. Allix