트림 NURBS 곡면의 T-스플라인 유한요소해석 T-spline FEA for Trimmed NURBS Surface

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In this present work, spline FEA for the trimmed NURBS surface of the 2D linear elasticity problem is presented. The main benefit of the proposed method is that no additional efforts for modeling of trimmed NURBS surfaces are needed and the information of the trimming curves and trimmed surfaces exported from the CAD system can be directly used for analysis. For this, trimmed elements are searched by using NURBS projection scheme. The integration of the trimmed elements is performed by using the NURBS-enhanced integration scheme. The formulation of constructing stiffness matrix of trimmed elements is presented. In this formulation, the information of the trimming curve is used for calculating the Jacobian as well as for obtaining integration points. The robustness and effectiveness of the proposed method are investigated through various numerical examples.
Publisher
대한기계학회
Issue Date
2009-02
Language
Korean
Citation

대한기계학회논문집 A, v.33, no.2, pp.135 - 144

ISSN
1226-4873
URI
http://hdl.handle.net/10203/100069
Appears in Collection
ME-Journal Papers(저널논문)
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