Phase‐field Fracture with Representative Crack Elements for Non‐linear Material Behaviour
Phase‐field Fracture with Representative Crack Elements for Non‐linear Material Behaviour
复制标题
非线性材料行为的具有代表性裂纹元素的相场断裂
DOI：
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
M. Kaliske
中科院分区：
文献类型：
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作者：
J. Storm;M. Kaliske
相场断裂模型的机械能势被细分为主动驱动裂纹的部分和被动驱动裂纹的部分。为了考虑裂纹表面的再接触，这种分解进一步取决于裂纹状态（打开或关闭）。裂纹状态的识别和分解大多是基于变形张量或应力张量的劈裂来近似实现的。Stobel和Seelig[1]以及Steinke和Kaliske[1]在准静态和动态分析中对这些模型的裂纹运动学进行了不切实际的预测。这些作者提出的方法可以一致地预测裂纹的运动学。然而，该模型仅限于线性、各向同性弹性和小变形。
The mechanical energy potential of phase‐field fracture models is subdivided into a portion which (actively) drives the crack and a passive portion. This decompositions depends further on the crack state (opened, closed) in order to consider the re‐contact of the crack surfaces. The identification of the crack state and the decomposition is mostly approximated based on splits of the deformation or stress tensor. Stobel and Seelig [1], and Steinke and Kaliske [2] have shown unrealistic predictions for the crack kinematic for those models in quasi‐static and dynamic analyses. The approach proposed by these authors allows to predict the crack kinematic consistently. Nevertheless, this model is restricted to linear, isotropic elasticity and small deformations.