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논문 기본 정보

자료유형
학술저널
저자정보
Lim, Jae Hyuk (Satellite Structure Department, Korea Aerospace Research Institute [KARI]) Sohn, Dongwoo (Division of Mechanical and Energy Systems Engineering, College of Engineering, Korea Maritime University) Im, Seyoung (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology [KAIST])
저널정보
테크노프레스 Structural engineering and mechanics : An international journal Structural engineering and mechanics : An international journal 제43권 제3호
발행연도
2012.1
수록면
349 - 370 (22page)

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Variable-node finite element families, termed (4 + k + l + m + n)-node elements with an arbitrary number of nodes (k, l, m, and n) on each of their edges, are developed based on the generic point interpolation with special bases having slope discontinuities in two-dimensional domains. They retain the linear interpolation between any two neighboring nodes, and passes the standard patch test when subdomain-wise $2{\times}2$ Gauss integration is employed. Their shape functions are automatically generated on the master domain of elements although a certain number of nodes are inserted on their edges. The elements can provide a flexibility to resolve nonmatching mesh problems like mesh connection and adaptive mesh refinement. In the case of adaptive mesh refinement problem, so-called "1-irregular node rule" working as a constraint in performing mesh adaptation is relaxed by adopting the variable-node elements. Through several examples, we show the performance of the variable-node finite elements in terms of accuracy and efficiency.

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