断裂力学分析的奇异有限元法研究综述  

ADVANCES IN SINGULAR FINITE ELEMENT METHOD FOR FRACTURE MECHANICS ANALYSIS

作　　者：段静波[1] 李道奎[1] 雷勇军[1] 

机构地区：[1]国防科技大学航天与材料工程学院,长沙410073

出　　处：《机械强度》2012年第2期262-269,共8页Journal of Mechanical Strength

基　　金：高等学校博士学科点专项科研基金(20069998002);教育部新世纪优秀人才支持计划(NCEF080148)资助项目~~

摘　　要：奇异有限元法是一种适用于大型复杂结构断裂分析的有效数值方法。从单元构造方式角度综述奇异有限元法的研究进展和应用情况,分析和总结位移型奇异单元、移动边中节点构造的奇异单元、应力型奇异单元等几种主要类型奇异裂纹单元的特点,并评价它们在工程应用方面的优劣,提出奇异有限元法未来发展可深入研究的方向以及其广阔的工程应用前景。Singular finite element method is very efficient for fracture analysis of large-scale complex structure.Advances and applications of this method are introduced according to conformation mode of element.Characteristics of all kinds of singular crack elements are analyzed and summaried,such as displacement singular element,singular element with mid-side node at the quarter point,stress hybrid element,and so on.The advantages and disadvantages in engineering practice are also presented.Finally,research directions and the extensive applications in engineering which are worth paying close attention to are put forward.

关 键 词：断裂力学 有限元方法 奇异 裂纹单元 

分 类 号：O346.1[理学—固体力学]