非连续边界元分析中的几个问题  

Discussions on Discontinuous Boundary Element Analysis

作　　者：张效松[1] 张婷[1] 赵永茂[1] 

机构地区：[1]石家庄铁道学院力学系,石家庄050043

出　　处：《重庆建筑大学学报》2000年第6期108-111,共4页Journal of Chongqing Jianzhu University

摘　　要：对影响非连续边界元分析精度的配位点选择问题进行了讨论 ;利用非连续边界元 -有限元耦合方法对文献 [1 ]针对耦合方法提出的分片检验例子进行了计算 ,结果表明 :只要合理地处理角点问题 。In this paper,several questions associated with discontinuous boundary elements are discussed.1.The optimum position of collocation point is reevaluated and it is found that accuracy of integrals,especially the nearly singular integrals, is the key factor that influences the accuracy of discontinuous boundary element analysis.2.Discontinuous boundary element is employed for combination of FEM BEM coupling procedure.The patch test, devised by Lu et al,is reconsidered. It is demonstrated that coupling procedure by discontinuous boundary element can achieve results of high accurary.

关 键 词：非连续BEM 配位点 非奇异积分 边界元 

分 类 号：O241.83[理学—计算数学]