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个人信息Personal Information
教授
博士生导师
硕士生导师
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：力学与航空航天学院
学科：计算力学. 固体力学. 工程力学
办公地点：综合一号实验楼608
联系方式：Email: ywa@dlut.edu.cn
电子邮箱：ywa@dlut.edu.cn
Improving accuracy of opening-mode stress intensity factor in two-dimensional media using fundamental solution based finite element model
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论文类型：期刊论文
发表时间：2012-01-01
发表刊物：Australian Journal of Mechanical Engineering
收录刊物：EI、Scopus
卷号：10
期号：1
页面范围：41-52
ISSN号：14484846
摘要：A hybrid finite element method (FEM) is developed for determining stress intensity factor of opening-mode cracks. The model is based on fundamental solutions and higher order displacement extrapolation. In the present formulation, linear combination of fundamental solutions and shape functions are respectively used to approximate the element interior and frame fields. The equality of the two approximations is enforced through a hybrid functional and element boundary integrals are involved only. Numerical examples are considered to investigate effects of element size, number of elements and crack length on crack tip singularity. Results show that the proposed approach can achieve better numerical accuracy than conventional FEM. ? Institution of engineers australia,2012.