Phase field modelling of crack propagation, branching and coalescence in rocks

被引：295
作者：
Zhou, Shuwei [3 ,4 ]
Zhuang, Xiaoying [4 ,5 ]
Zhu, Hehua [4 ]
Rabczuk, Timon [1 ,2 ]
机构：
[1] Ton Duc Thang Univ, Div Computat Mech, Ho Chi Minh City, Vietnam
[2] Ton Duc Thang Univ, Fac Civil Engn, Ho Chi Minh City, Vietnam
[3] Bauhaus Univ Weimar, Inst Struct Mech, D-99423 Weimar, Germany
[4] Tongji Univ, Coll Civil Engn, Dept Geotech Engn, Shanghai 200092, Peoples R China
[5] Leibniz Univ Hannover, Inst Continuum Mech, D-30167 Hannover, Germany
来源：
THEORETICAL AND APPLIED FRACTURE MECHANICS | 2018年 / 96卷
关键词：
Phase field; Rock; COMSOL; Crack propagation; Crack branching; ADAPTIVE MULTISCALE METHOD; PHANTOM-NODE METHOD; MESHFREE METHOD; ABAQUS IMPLEMENTATION; MULTIPLE FLAWS; DAMAGE MODEL; SHEAR BANDS; FRACTURE; ELEMENT; PERIDYNAMICS;
D O I：
10.1016/j.tafmec.2018.04.011
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
We present a phase field model (PFM) for simulating complex crack patterns including crack propagation, branching and coalescence in rock. The phase field model is implemented in COMSOL and is based on the strain decomposition for the elastic energy, which drives the evolution of the phase field. Then, numerical simulations of notched semi-circular bend (NSCB) tests and Brazil splitting tests are performed. Subsequently, crack propagation and coalescence in rock plates with multiple echelon flaws and twenty parallel flaws are studied. Finally, complex crack patterns are presented for a plate subjected to increasing internal pressure, the (3D) Pertersson beam and a 3D NSCB test. All results are in good agreement with previous experimental and numerical results.
引用
收藏
页码：174 / 192
页数：19
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