含孔边裂纹各向异性有限板的二维问题  

Two Dimensional Problem of Finite Anisotropic Plate with Cracks Emanating from a Hole

作　　者：张志华[1] 王林江[1] 吕庆风 

机构地区：[1]南京航空航天大学无人机研究所,南京210016

出　　处：《南京航空航天大学学报》1999年第4期470-474,共5页Journal of Nanjing University of Aeronautics & Astronautics

摘　　要：应用边界元法，并结合一种特殊的复变函数基本解，研究了含孔边裂纹的各向异性有限板的应力强度因子修正系数的计算。这种特解边界元法避免了在裂纹附近划分单元，可以获得较好的数值计算精度。通过算例分析，结果表明本方法精度高，运算量小，具有一定的工程应用价值。A boundary element formulation incorporating a derived fundamental as its kernels is developed. The boundary element equation extends only over the portion of boundary, not including the surface of elliptical hole or the crack. Thus numerical difficulties associated with modelling stress concentration or singularity can be avoided and better numerical accuracy obtained. Examples are given in which the stress concentration factors are obtained with the procedure compiled by this paper. The results show that the method has better accuracy and less calculating time. This method is valuable in engineering calculation.

关 键 词：应力集中 边界元法 各向异性有限板 孔边裂纹 

分 类 号：O343.4[理学—固体力学] TB115[理学—力学]