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VDT microplane model with anisotropic effectiveness and plasticity

机译:VDT微相模型具有各向异性效果和可塑性

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The opening-closing state of the microcracks is a kinematic phenomenon usually modeled using a set of damage effectiveness variables, which results in different elastic responses for the same damage level. In this work, the microplane model with volumetric, deviatoric and tangential decomposition denoted V-D-T is modified. The influence of the confining pressure is taken into account in the damage variables evolution laws. For a better understanding of the mechanisms introduced into the model, the damage rosettes are presented for a strain given level. The model is confirmed through comparisons of the simulations with the experimental results of monotonic, and cyclic tensile and compressive testing with different levels of confining pressure.
机译:微裂纹的开启闭合状态是通常使用一组损伤效果变量建模的运动现象,这导致相同损伤水平的不同弹性响应。 在这项工作中,修改了具有体积,偏离和切向分解的微型介质模型,其表示V-D-T。 在损伤变量进化法中考虑了限制压力的影响。 为了更好地理解引入模型的机制,造成损伤的玫瑰花丝以适用于给定水平的应变。 该模型通过与单调的实验结果的模拟和循环拉伸和压缩试验的模拟进行了确认,具有不同水平的限制压力。

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