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精确几何单元下弹性薄体结构问题的边界元法分析 被引量:2

Boundary Element Analysis of Thin-walled Structures in Elasticity Problems with Exact Geometrical Representation
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摘要 对圆弧单元下的几乎奇异积分,采用变量替换法进行正则化,然后采用通常的高斯求积公式进行计算,可获得相当高的计算精度,即使是超薄的薄体结构,方法仍然十分有效. An exact geometrical representation,arc element,is introduced for thin bodies with circular boundary.A general nonlinear transformation available for arc elements is constructed.With exact geometrical representation,numerical accuracy of nearly singular integrals is greatly improved,which makes possible to deal with ultra-thin structures.
出处 《计算物理》 EI CSCD 北大核心 2011年第3期397-403,共7页 Chinese Journal of Computational Physics
基金 国家自然科学基金(10571110 11071148) 山东省自然科学基金重点项目(ZR2010AZ003) 工业装备结构分析国家重点实验室开放基金(GZ1017)资助项目
关键词 边界元法 弹性力学问题 边界层效应 薄体结构 精确几何单元 boundary element method elastic problem boundary layer effect thin-walled structures exact geometrical representation
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