To study the influence of fillings on rock failure. By turning to the Drucker-Prager strength model and cumulative damage criteria, investigations are made, with the nonlinear AUTODYN software, into crack propagation behaviors in crack-filled and unfilled specimens under uniaxial dynamic loading. Under investigations are crack initiation position, sequence and angle, and coalescence mode. According to the mode of propagation and coalescence, cracks are divided into three types, i.e., the tensile wing, the antiwing, and the horsetail. The simulation results show that under uniaxial dynamic loading, differences are found in initiation position, angle, and coalescence mode for specimens with cracks filled or otherwise. However, filling does not affect crack initiation sequence. Under the same loading, the damage to filled specimen is less severe than that to the unfilled specimen.

中文翻译：

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基于AUTODYN的仿真研究在高应变率载荷下两个填充非聚结共面缺陷的裂纹扩展

研究充填物对岩石破坏的影响。通过转向 Drucker-Prager 强度模型和累积损伤准则，使用非线性 AUTODYN 软件研究单轴动态载荷下裂纹填充和未填充试样的裂纹扩展行为。正在研究裂纹萌生位置、序列和角度以及聚结模式。根据扩展和聚结方式，裂纹分为三种类型，即拉伸翼型、反翼型和马尾型。仿真结果表明，在单轴动态加载下，裂纹填充或其他情况下的试样在起始位置、角度和聚结方式上存在差异。然而，填充不影响裂纹萌生顺序。在相同的负载下，