裂纹对悬臂梁力学响应影响的扩展有限元模拟  

Numerical simulation for effect of crack on mechanical behavior of cantilever beam by extended finite element method

作　　者：楚锡华[1] 刘辉[1] 陈龙[1] 徐远杰[1] 

机构地区：[1]武汉大学土木建筑工程学院,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2009年第2期223-226,259,共5页Engineering Journal of Wuhan University

基　　金：国家自然科学基金资助项目(编号:10802060)

摘　　要：扩展有限元继承了传统有限元的优点,在求解以裂纹扩展等为代表的一类不连续力学问题时具有明显的优势.主要探讨了含裂纹单元的积分域剖分,应用Fortran语言开发了相应的程序代码.以悬臂梁结构为例探讨了裂纹以及裂纹扩展对其力学响应的影响,数值结果表明了程序开发的正确性.The extended finite element method（XFEM）is of significant advantage for the strong discontinuity problems such as crack growth. Its basic theory is reviewed; and the partition of element with crack is discussed. The code for XFEM has been done in FORTRAN. The effect of crack and crack growth on mechanical behavior of cantilever beam is discussed; the results illustrate the efficiency of the code of XFEM.

关 键 词：扩展有限元 强间断问题 裂纹扩展 数值模拟 

分 类 号：O34[理学—固体力学]