哈尔滨工业大学学报（英文版）2005，Vol.12Issue(4)：351-357,7.
A numerical method for multiple cracks in an infinite elastic plate
A numerical method for multiple cracks in an infinite elastic plate
摘要
Abstract
This article examines the interaction of multiple cracks in an infinite plate by using a numerical method. The numerical method consists of the non-singular displacement discontinuity element presented by Crouch and Starfied and the crack tip displacement discontinuity elements proposed by the author. In the numerical method implementation, the left or the right crack tip element is placed locally at the corresponding left or right crack tip on top of the constant displacement discontinuity elements that cover the entire crack surface and the other boundaries. The numerical method is called a hybrid displacement discontinuity method. The following test examples of crack problems in an infinite plate under tension are included: "center-inclined cracked plate", "interaction of two collinear cracks with equal length", "interaction of three collinear cracks with equal length", "interaction of two parallel cracks with equal length", and "interaction of one horizontal crack and one inclined crack". The present numerical results show that the numerical method is simple yet very accurate for analyzing the interaction of multiple cracks in an infinite plate.关键词
multiple cracks/stress intensity factor/boundary element method/crack tip element/displacement discontinuity methodKey words
multiple cracks/stress intensity factor/boundary element method/crack tip element/displacement discontinuity method分类
通用工业技术引用本文复制引用
YAN Xiang-qiao,WU Hai-peng..A numerical method for multiple cracks in an infinite elastic plate[J].哈尔滨工业大学学报（英文版）,2005,12(4):351-357,7.基金项目
Sponsored by the National Natural Science Foundation of China (Grant No. 10272037) and the Natural Science Foundation of Heilongjiang (Grant No. A-02-05). （Grant No. 10272037）
