动节点对自适应接触边界元法  

Moving node-pairs adaptive contact BEM

作　　者：于春肖[1] 申光宪[2] 陈一鸣[1] 

机构地区：[1]燕山大学理学院,河北秦皇岛066004 [2]燕山大学机械工程学院,河北秦皇岛066004

出　　处：《燕山大学学报》2004年第5期388-394,共7页Journal of Yanshan University

基　　金：国家自然科学基金资助项目(No.50075075)

摘　　要：Kamiya提出的弹性接触问题边界元分离解法和申光宪、陈一鸣、刘德义等引入最优罚因子的边界元分离解法,关于计算中接触状态的判别比较模糊,所得接触区与真实接触区相差很大。对此,本文进行了严密的分析,提出一种新的动节点对自适应分离接触迭代判别方法及实现方案并详细描述了数据结构,同时,还编制了自适应动节点对分离接触迭代方法的边界元程序(2-DECPAOBEM),证实了本文新方案、算法的有效性,从而获得更精确的真实接触区及边界元解。In the separation solution for the elastic contact problems proposed by Kamiya and the solution which introduces an op- timal penalty factor by Shen Guangxian, Chen Yiming and Liu Deyi et al., the judgment of contact states is rough. In this paper, after analyzing it narrowly, we put forward a new efficient scheme in which some node-pairs can move along the boundary in as- sumed contact zone and describe the data structure. In addition, we work out the program of adaptive separation solution for the contact problems in BEM 2-DCEPAOBEM , which validates the efficiency of the new scheme and algorithm included in this ( ) paper. Then much more exact contact zone and boundary element solution are obtained.

关 键 词：边界元法 弹性接触问题 迭代方法 分离解 因子 判别方法 自适应 数据结构 节点 实现方案 

分 类 号：TH132[机械工程—机械制造及自动化] TP311[自动化与计算机技术—计算机软件与理论]