Details
| Original language | English |
|---|---|
| Pages (from-to) | 2187-2196 |
| Number of pages | 10 |
| Journal | Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering |
| Volume | 31 |
| Issue number | 11 |
| Publication status | Published - 1 Nov 2012 |
| Externally published | Yes |
Abstract
The contract and frictional algorithms are developed in the meshless method, element-free Galerkin method for modelling 2D crack propagation in rock mass subjected to compressive and tensile loading conditions. Here, the level set method is used to describe the crack geometry. To capture the displacement jump across the joint when the join is open, the diffraction rule is used to modify the weight function;and hence construction of the discontinuous meshless approximation. The joint closure is modeled by a new meshless frictional sliding and contact algorithm, which is similar to the well known Goodman element in the family of finite elements to model the sliding and contact between joint surfaces. Different from Goodman element and former meshless methods, the construction of present method is based on the material points instead of the nodes, and thereby it performs better and is more flexible in model generation of a joint of complex geometry. The material points and nodes generation after joint propagation is based on the level sets functions which have a general form for arbitrary crack in 2D. A number of examples are tested to model the crack propagation in rock samples subjected to compression and tension showing the correctness of the method.
Keywords
- Contact and friction, Joint closure, Joint propagation, Level sets, Meshless methods, Rock mechanics
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Earth and Planetary Sciences(all)
- Geotechnical Engineering and Engineering Geology
- Earth and Planetary Sciences(all)
- Geology
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In: Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, Vol. 31, No. 11, 01.11.2012, p. 2187-2196.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Simulation for 2D compression-shear joint dynamic propagation process using meshless methods based on level sets coordinates
AU - Zhuang, Xiaoying
AU - Huang, Runqiu
AU - Zhu, Hehua
PY - 2012/11/1
Y1 - 2012/11/1
N2 - The contract and frictional algorithms are developed in the meshless method, element-free Galerkin method for modelling 2D crack propagation in rock mass subjected to compressive and tensile loading conditions. Here, the level set method is used to describe the crack geometry. To capture the displacement jump across the joint when the join is open, the diffraction rule is used to modify the weight function;and hence construction of the discontinuous meshless approximation. The joint closure is modeled by a new meshless frictional sliding and contact algorithm, which is similar to the well known Goodman element in the family of finite elements to model the sliding and contact between joint surfaces. Different from Goodman element and former meshless methods, the construction of present method is based on the material points instead of the nodes, and thereby it performs better and is more flexible in model generation of a joint of complex geometry. The material points and nodes generation after joint propagation is based on the level sets functions which have a general form for arbitrary crack in 2D. A number of examples are tested to model the crack propagation in rock samples subjected to compression and tension showing the correctness of the method.
AB - The contract and frictional algorithms are developed in the meshless method, element-free Galerkin method for modelling 2D crack propagation in rock mass subjected to compressive and tensile loading conditions. Here, the level set method is used to describe the crack geometry. To capture the displacement jump across the joint when the join is open, the diffraction rule is used to modify the weight function;and hence construction of the discontinuous meshless approximation. The joint closure is modeled by a new meshless frictional sliding and contact algorithm, which is similar to the well known Goodman element in the family of finite elements to model the sliding and contact between joint surfaces. Different from Goodman element and former meshless methods, the construction of present method is based on the material points instead of the nodes, and thereby it performs better and is more flexible in model generation of a joint of complex geometry. The material points and nodes generation after joint propagation is based on the level sets functions which have a general form for arbitrary crack in 2D. A number of examples are tested to model the crack propagation in rock samples subjected to compression and tension showing the correctness of the method.
KW - Contact and friction
KW - Joint closure
KW - Joint propagation
KW - Level sets
KW - Meshless methods
KW - Rock mechanics
UR - http://www.scopus.com/inward/record.url?scp=84870376312&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:84870376312
VL - 31
SP - 2187
EP - 2196
JO - Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering
JF - Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering
SN - 1000-6915
IS - 11
ER -