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首页> 外文期刊>Zeitschrift fur Angewandte Mathematik und Mechanik >Contribution to anisotropic modeling of damaged ductile materials
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Contribution to anisotropic modeling of damaged ductile materials

机译:对损坏的延性材料的各向异性建模的贡献

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摘要

A micro-mechanically motivated phenomenological model for the description of the elastic-plastic behavior of anisotropic damaged metals containing oriented microvoids at finite deformations is presented. The model is derived in the framework presented by Xiao, Bruhns and Meyers with the poverty of exact integrability. As the damage-measure the coefficients of a tensor-valued Fourier-series are used and interpreted for ellipsoidal voids. From energetic considerations on an elementary material cell, the qualitative dependence of the elastic constants on the aspect-ratios of the voids can be shown. The anisotropic effect of damage is taken into account phenomenologically within the scope of an effective stress concept by means of an isotropic tensor-valued function for the elastic compliances. [References: 4]
机译:提出了一种微机械动力的现象学模型,用于描述在有限变形下含有定向微孔的各向异性损伤金属的弹塑性行为。该模型是在Xiao,Bruhns和Meyers提出的框架中得出的,该框架缺乏精确的可集成性。使用张量值傅立叶级数的系数作为破坏度量,并解释为椭圆形空隙。从对基本材料单元的能量考虑,可以显示弹性常数对空隙的长宽比的定性依赖性。在等效应力张量值函数中,通过弹性柔量,在有效应力概念的范围内,从现象学角度考虑了损伤的各向异性效应。 [参考:4]

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