Adaptive Mesh Refinement and Multigrid FEM by Error Estimation

오차추정에 의한 순응형요소분할과 다단계 유한요소해석

  • 양박달치 (울산대학교 조선해양공학과) ;
  • 황명연 (한라중공업 선박해양연구소)
  • Received : 1995.09.11
  • Published : 1996.02.20

Abstract

The optimal mesh refinement has a meaning that error of the every element is within an allowable level and in uniformly distributed. The adaptive mesh generation may be required to achieve the optimal mesh generation. For the purpose of optimal mesh generation, an error estimation and an adaptive mesh refinement are required. Using the adaptive mesh generation the second finite element analysis is performed with the result of the first analysis. In the process the error estimation is required. In this study the adaptive mesh generation program for triangular element is developed, and for a posteriori error estimation the stress projection approach is considered. It has been found the multigrid technique, where the error estimation and the mesh generation are combined in multi-step of analysis, may be used efficiently in the finite element analysis.

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