Numerical method for crack extension analysis based on fatigue fracture process of rock materials

被引：0

作者：

Zhou Shang-zhi ^{[1
]}

Dang Fa-ning ^{[2
]}

Chen Hou-qun ^{[3
]}

Long Qiao-ling ^{[1
]}

机构：

[1] Changsha Univ Sci & Technol, Sch Bridge & Struct Engn, Changsha 410076, Hunan, Peoples R China

[2] Xian Univ Technol, Sch Hydraul & hydroelect Engn, Xian 710048, Shaanxi, Peoples R China

[3] China Inst Water Resources & Hydropower Res, Beijing 100044, Peoples R China

来源：

ROCK AND SOIL MECHANICS | 2008年 / 29卷 / 03期

关键词：

rock; damage mechanics; fatigue fracture; crack extension; numerical analysis;

D O I：

暂无

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Numerical analysis of fatigue fracture process of rock materials, two phases, fatigue crack initiation and extension, are rightly associated by damage mechanics method. Based on fatigue curve in the crack initiation process, a numerical method to compute the fatigue crack extension, is proposed. The relation between crack length and fatigue life in the crack extension can be obtained by the damage mechanics-finite element method. The above two phases being separately dealt in existing researches are brought into a unified theoretical frame. This method is used to analyze rock-concrete materials, the fatigue lives calculated agree well with the experimental ones.

引用

页码：769 / 774

页数：6