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Geometrical relation between circular inclusion and quadrangular element for solving multi-inclusions problem by XFEM
Authors
刘晓宇
姚再兴
李世海
Publication date
1 January 2009
Publisher
Abstract
用扩展有限元法XFEM(Extended Finite Element Method)解决夹杂问题时,夹杂与基质的界面把单元分成若干部分.求单元刚度矩阵时,需要分别在这各个部分求积分.找到便于程序编制的描述各积分区域几何形状的方法是亟待解决的问题.本文把各积分区域的形成过程看成是圆对四边形的多次切割.考虑切剩区域与圆的关系时,把不完整的边仍看作完整的边,把切剩区域看成是四边形或是切去一两条边的四边形.采用排列组合的方法,把它们与圆的所有位置关系列了出来
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Institute Of Mechanics,Chinese Academy of Sciences
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Last time updated on 12/02/2018