Fracture incubation time and scale invariance of dynamic crack propagation in brittle solids

A. Grigoriev, E. Shilko
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引用次数: 1

Abstract

In the paper, we theoretically studied the dynamics of mode II crack propagation in brittle solids with taking into account the finite duration of incubation of local fracture. The study was carried out by computer simulation using the movable cellular automaton method. We analyzed the influence of the magnitude of fracture incubation time on the fulfillment of the scale-invariance condition of dynamic crack propagation. We proposed a definition of this condition in terms of fracture incubation time and introduced a new physically based criterion to classify structural levels of fracture in brittle materials.
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脆性固体中动态裂纹扩展的断裂孕育时间和尺度不变性
本文从理论上研究了考虑局部断裂孕育时间有限的脆性固体中II型裂纹扩展动力学。采用可移动元胞自动机方法进行计算机仿真。分析了断裂孕育时间大小对满足动态裂纹扩展尺度不变条件的影响。我们从断裂孕育时间的角度提出了这一条件的定义,并引入了一种新的基于物理的标准来分类脆性材料的断裂结构水平。
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