Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Automatic Mesh Generation in the General Three-Dimensional Trimmed Surface using Qua

쿼드트리를 이용한 일반적인 3차원 트림곡면에서의 유한요소 자동생성

  • 유동진 (대진대학교 컴퓨터응용 기계설계학과) ;
  • 윤정환 (LG 생산기술원 Design Engineering Center)
  • Published : 2000.03.01
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Abstract

In this work, a general method for the mathematical description of three-dimensional trimmed surface is proposed by introducing the base parametric surface and boundary curves. Since mesh density distribution for the analysis may vary by cases, a grid-based mesh generation algorithm using quadtree is proposed in the present work. For the assurance of connectivity of generated meshes among surfaces, a method for the pre-cleaning of boundary curves has been developed to be used in the automatic generation of the finite elements. In addition, mesh-smoothing algorithm is suggested which can be used in the general trimmed surface. In this algorithm nodes are moved on the original surface by the normal projection in each iterative smoothing procedure.

Keywords

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