含曲线裂纹复合圆柱体的扭转断裂分析  

Fracture Analysis for Torsion Problems of a Composite Cylinder With Curvilinear Cracks

作　　者：潘天娓[1] 王银邦[1] 

机构地区：[1]中国海洋大学工程学院,山东青岛266100

出　　处：《应用数学和力学》2008年第8期911-917,共7页Applied Mathematics and Mechanics

基　　金：国家高技术研究发展计划资助项目(2007AA09Z317)

摘　　要：研究含任意曲线裂纹的复合圆柱体的Saint-Venant扭转,将内外材料的交界面视为一边界,将问题划归为内、外边界和裂纹上的积分方程的求解.提出了新的边界元数值方法,分别对含有直线裂纹和曲折裂纹的典型问题进行了数值计算,并与文献中数据结果进行了比较,证明了该文方法的正确性和有效性.The Saint-Venant torsion problems of a composite cylinder with curvlinear cracks were investigated. By means of considering the bimaterial interface as a boundary of outer bar or inner one, the problem was reduced to solving the boundary integral equations on crack, external boundary and interface. Using the new boundary element method, some typical torsion problems of a composite cylinder involving a straight or kinked crack were calculated. The obtained results were compared with the literature data to prove the validity and applicability of the present method.

关 键 词：Saint—Venant扭转 复合柱体 曲线裂纹 边界积分方程 应力强度因子 

分 类 号：O346.1[理学—固体力学]