Ⅰ-Ⅱ复合型裂纹的应力强度因子有限元计算分析  

Ⅰ-Ⅱ Mixed-mode crack stress intensity factor of the finite element calculation and analysis

作　　者：陈芳[1] 王生楠[1] 

机构地区：[1]西北工业大学航空学院,西安710072

出　　处：《机械设计与制造》2009年第8期20-21,共2页Machinery Design & Manufacture

摘　　要：ABAQUS软件对中心穿透斜裂纹板及边斜裂纹板进行了有限元模拟。计算复合型裂纹的应力强度因子K1和KⅡ,并将计算结果与现有理论结果进行了比较;分析了裂纹尺寸和裂纹角对应力强度因子的影响。结果表明:裂纹角从0°增大到90°,裂纹类型由复合型向纯I型转变;用ABAQUS软件计算复合型裂纹的应力强度因子相对误差保持在5%之内,计算精度完全满足工程要求。Finite element simulation of central and single side inclined crack plate. Calculation of mixed-mode crack stress intensity factar and,The results will be available with the theoretical results are compared;Analysis of the crack size and crack angle on the stress intensity factar. The results show that： Crack angle from 0° to 90° increase,The type of crack from mixed-mode to the pure type Ⅰ;ABAQUS software to use mixed-mode crack stress intensity factor of the relative error of 5% ,calculated to satisfy the precision engineering requirements.

关 键 词：复合型裂纹 裂纹角 应力强度因子 

分 类 号：TH12[机械工程—机械设计及理论] V214[航空宇航科学与技术—航空宇航推进理论与工程]