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http://dx.doi.org/10.3795/KSME-A.2007.31.1.105

Integration of Shell FEA with Geometric Modeling Based on NURBS Surface Representation  

Choi, Jin-Bok (서울대학교 기계항공공학부)
Roh, Hee-Yuel (삼성전자 주식회사)
Cho, Maeng-Hyo (서울대학교 기계항공공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.31, no.1, 2007 , pp. 105-112 More about this Journal
Abstract
The linkage framework of geometric modeling based on NURBS(Non-Uniform Rational B-Spline) surface and shell finite analysis is developed in the present study. For this purpose, geometrically exact shell finite element is implemented. NURBS technology is employed to obtain the exact geometric quantities for the analysis. Especially, because NURBS is the most powerful and wide-spread method to represent general surfaces in the field of computer graphics and CAD(Computer Aided Design) industry, the direct computation of surface geometric quantities from the NURBS surface equation without approximation shows great potential for the integration between geometrically exact shell finite element and geometric modeling in the CAD systems. Some numerical examples are given to verify the performance and accuracy of the developed linkage framework. In additions, trimmed surfaces with some cutouts are considered for more practical applications.
Keywords
Shell Finite Element Analysis; NURBS Surface; Integrated Design; Trimmed Surface;
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