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Variable-node axisymmetric solid element and its application to adaptive mesh refinement
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  • Variable-node axisymmetric solid element and its application to adaptive mesh refinement
  • Variable-node axisymmetric solid element and its application to adaptive mesh refinement
저자명
Choi. Chang-Koon,Lee. Eun-Jin,Lee. Wan-Hoon
간행물명
Structural engineering and mechanics : An international journal
권/호정보
2001년|11권 4호|pp.443-460 (18 pages)
발행정보
테크노프레스
파일정보
정기간행물|ENG|
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기타
이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

This paper presents an effective application of a variable-node axisymmetric solid element designated as AQV (Axisymmetric Quadrilateral Variable-node element). The variable-node element with physical midside nodes helps to overcome some problems in connecting the different layer patterns on a quadrilateral mesh in the adaptive h-refinement. This element alleviates the necessity of imposing displacement constraints on irregular (hanging) nodes in order to enforce the inter-element compatibility. Therefore, the elements with variable mid-side nodes can be used effectively in the local mesh refinement for the axisymmetric structures which have stress concentrations. A modified Gaussian quadrature should be adopted to evaluate the stiffness matrices of the variable-node elements mainly because of the slope discontinuity of assumed displacement within the elements. Some numerical examples show the usefulness of variable-node axisymmetric elements in the practical application.