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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
 


A locally refinable T-spline finite element method for CAD/CAE integration
Tae-Kyoung Uhm, Ki-Seung Kim, Yu-Deok Seo and Sung-Kie Youn

 
Abstract
    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
 

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