FRACTURE ANALYSES OF MEDIA COMPOSED OF IRREGULARLY SHAPED REGIONS BY THE EXTENDED DISTINCT ELEMENT METHOD

FRACTURE ANALYSES OF MEDIA COMPOSED OF IRREGULARLY SHAPED REGIONS BY THE EXTENDED DISTINCT ELEMENT METHOD
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扩展离散元法对不规则形状区域介质的断裂分析

DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
M. Hakuno
M. Hakuno
中科院分区：
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文献类型：
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作者：
K. Meguro;K. Iwashita;M. Hakuno

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由不规则形状区域组成的介质分析是DEM研究中的一个主要问题。提出了一种新的求解方法。我们开发了扩展离散元法（EDEM），并将其应用于不规则形状区域组成的介质中的断裂行为问题。由孔弹簧连接的圆形（2-D）或球形（3-D）单元的集合构成不规则形状的区域，并且被称为“组合离散单元（CDE）”。CDE的概念大大拓宽了EDEM的应用，因为可以容易地研究由各种形状区域组成的各向异性介质的行为;此外，CDE内的裂纹以及CDE的完全断裂可以自动模拟。
Analysis of a medium which consists of irregularly shaped regions is a major problem in the DEM studies. A new method for solving this problem is proposed. We developed the Extended Distinct Element Method (EDEM) and applied it to problems of fracture behavior in media composed of irregularly shaped regions. An aggregate of circular (2-D) or spherical (3-D) elements connected by pore-springs constitutes an irregularly shaped region, and is called the “Combined Discrete Element (CDE)”. The concept of the CDE has greatly broadened application of the EDEM as the behavior of an anisotropic medium composed of variously shaped regions can be easily studied; moreover, cracks within the CDE as well as complete fracture of the CDE can be simulated automatically.