Modeling crack in viscoelastic media using the extended finite element method  

作　　者：YU TianTang REN QingWen 

机构地区：[1]Department of Engineering Mechanics, Hohai University, Nanjing 210098, China

出　　处：《Science China(Technological Sciences)》2011年第6期1599-1606,共8页中国科学（技术科学英文版）

基　　金：supported by the National Basic Research Program of China ("973" Program) (Grant No 2007CB714104)

摘　　要：In this paper,the problem of modeling crack in 2D viscoelastic media is studied using the extended finite element method.The paper focuses on the definition of enrichment functions suitable for cracks assessment in viscoelastic media and the generalized domain integrals used in the determination of crack tip parameters.The opening mode and mixed mode solutions of crack tip fracture problems in viscoelastic media are also undertaken.The results obtained by the proposed method show good agreement with the analytical methods and provide reasonable background information to enhance the modeling of crack growth in viscoelastic media.

关 键 词：viscoelastic media extended finite element method CRACK crack tip parameters 

分 类 号：O241.82[理学—计算数学] P631.4[理学—数学]