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Structural Engineering and Mechanics Volume 30, Number 2, September30 2008, pages 225-245 DOI: http://dx.doi.org/10.12989/sem.2008.30.2.225 |
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A locally refinable T-spline finite element method for CAD/CAE integration |
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Tae-Kyoung Uhm, Ki-Seung Kim, Yu-Deok Seo and Sung-Kie Youn
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| Abstract | ||
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T-splines are recently proposed mathematical tools for geometric modeling, which are generalizations of B-splines. Local refinement can be performed effectively using T-splines while it is not the case when B-splines or NURBS are used. Using T-splines, patches with unmatched boundaries can be combined easily without special techniques. In the present study, an analysis framework using T-splines is proposed. In this framework, T-splines are used both for description of geometries and for approximation of solution spaces. This analysis framework can be a basis of a CAD/CAE integrated approach. In this approach, CAD models are directly imported as the analysis models without additional finite element modeling. Some numerical examples are presented to illustrate the effectiveness of the current analysis framework. | ||
| Key Words | ||
| Non-Uniform Rational B-Splines (NURBS); T-splines; isogeometric analysis; finite element method; Computer-Aided Design (CAD); Computer-Aided Engineering (CAE). | ||
| Address | ||
| Tae-Kyoung Uhm: Dept. of Mechanical Engineering, KAIST, 373-1, Guseong-dong, Yuseong-gu, Daejeon 305-701, Korea Ki-Seung Kim: Mechanical Engineering R&D Center, LIG Nex1, 148-1, Mabuk-dong, Giheung-gu, Yongin-si, Gyeonggi-do 449-910, Korea Yu-Deok Seo and Sung-Kie Youn: Dept. of Mechanical Engineering, KAIST, 373-1, Guseong-dong, Yuseong-gu, Daejeon 305-701, Korea | ||