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Embedded crack vs. smeared crack models: a comparison of elementwise discontinuous crack path approaches with emphasis on mesh bias

机译:嵌入式裂缝与涂污裂缝模型:比较单元间断裂缝路径方法,重点是网格偏差

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This paper is concerned with an analysis of the mesh dependence of results from numerical failure analyses using the strong discontinuity approach (SDA) based on an analytical and numerical comparison with a standard plasticity model, pertaining to the classical fracture energy based smeared crack concept using a consistent characteristic length. The SDA is characterized by incorporating the kinematics of fractured solids locally within the finite element. The resulting jumps in the displacement field are captured by their corresponding singularly distributed strains. For the analytical and numerical study of the mesh dependence only mode-I failure is considered. Analogies and differences of both finite element formulations are investigated and evaluated.
机译:本文涉及基于强不连续性方法(SDA)的数值失效分析结果对网格的依赖性分析,该分析基于与标准可塑性模型的分析和数值比较,涉及基于经典断裂能的涂抹裂纹概念一致的特征长度。 SDA的特征是在有限元内局部合并了裂隙固体的运动学。位移场中产生的跃变被它们相应的奇异分布应变捕获。对于网格相关性的分析和数值研究,仅考虑I型失效。研究和评估了两种有限元公式的相似性和差异。

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