Displacement field analysis for cracking processes in bonded-particle model
Displacement field analysis for cracking processes in bonded-particle model
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DOI：
10.1007/s10064-013-0496-1
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发表时间：
2014-02
影响因子：
4.2
通讯作者：
Xiao-Ping Zhang;L. Wong
中科院分区：
文献类型：
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作者：
Xiao-Ping Zhang;L. Wong
粘结颗粒模型（BPM）是岩石/类岩石材料开裂过程的一种常用模型。然而，BPM中的离散粒子不能产生连续的位移场，这是可比的，在物理实验和数值方法，如有限元法。本文引入位移趋势线来分析BPM的位移场类型。定义了三种位移场类型（DF_I、DF_II和DF_III）并用于开裂过程的分析。研究表明，在开裂过程中，位移场的类型可能发生演变。建议研究人员在特定裂纹形成之前和之后立即检查位移场。检查相关类型的位移场可以帮助揭示裂纹的性质。
Bonded-particle model (BPM) is widely used to model the cracking processes in rock/rock-like materials. However, the discrete particles in the BPM cannot produce a continuous displacement field, which is comparable with those in physical experiments and numerical method such as the finite element method. Displacement trend lines are introduced to analyze the displacement field type of the BPM in the present study. Three displacement field types (DF_I, DF_II and DF_III) are defined and used in the analysis of the cracking processes. The study shows that the type of displacement field may evolve during the cracking processes. Researchers are advised to examine the displacement field before and right after a particular crack has formed. An examination of the associated type of displacement field can help reveal the nature of the crack.