Numerical calculation on Stress Intensity Factor in rock using Extended Finite Element Method

被引：0
|
作者：
Sun, Bo [1 ]
Zhou, Bo [1 ]
Xue, Shifeng [1 ]
机构：
[1] China Univ Petr, Coll Pipeline & Civil Engn, Qingdao, Peoples R China
来源：
ADVANCES IN ENERGY, ENVIRONMENT AND MATERIALS SCIENCE | 2016年
关键词：
3-DIMENSIONAL CRACK; DISLOCATIONS;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The Extended Finite Element Method (XFEM) is a new numerical method for modeling discontinuities such as inclusions, holes, cracks etc. within a standard finite element framework. Compared with conventional finite element method, it has a unique advantage that the problem domain is modelled without explicitly meshing the discontinuities. Thus it can improve the computational efficiency and has broad use in the field of the fracture mechanics. The basic theory of XFEM is presented and the discretization scheme is derived. Numerical examples are carried out to quantitatively study the influencing factors-mesh size, crack length and domain size of interaction integral-of Stress Intensity Factor (SIF) of rock crack. Results show that the mesh size and the domain size of interaction integral will affect the computational accuracy. The constant value c associated with the domain size of interaction integral is suggested.
引用
收藏
页码：695 / 699
页数：5
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