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An Adaptive Analysis in the Element-free Galerkin Method Using Bubble Meshing Technique  

정흥진 (정회원·전주대학교 토목환경공학과)
이계희 (목포해양대학교 해양시스템공학부)
최창근 (정회원·한국과학기술원 토목공학과 석좌교수)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.15, no.1, 2002 , pp. 85-94 More about this Journal
Abstract
In this study an adaptive node generation procedure in the Element-free Galerkin (EFG) method using bubble-meshing technique is Proposed. Since we construct the initial configuration of nodes by subdivision of background cell, abrupt changes of inter-nodal distance between higher and lower error regions are unavoidable. This unpreferable nodal spacing induces additional errors. To obtain the smooth nodal configuration the nodal configurations are regenerated by bubble-meshing technique. This bubble meshing technique was originally developed to generate a set of well-shaped triangles and tetrahedra. In odder to evaluate the effect of abrupt changes of nodal spacing, one-dimensional problems with various nodal configurations mere investigated. To demonstrate the performance of proposed scheme, the sequences of making optimal nodal configuration with bubble meshing technique are investigated for several problems.
Keywords
Element-free Galerkin method; Adaptive analysis; Error Estimates; Meshfree Method;
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