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http://dx.doi.org/10.7734/COSEIK.2018.31.3.155

H-refined Shape Design Sensitivity Analysis of Elastic Structures using Multi-Resolution Approach  

Lee, Taeho (MIDASIT)
Yoon, Minho (Korea Atomic Engergy Research Institute)
Cho, Seonho (Dept. of Naval Architecture and Ocean Engineering, Seoul National Univ.)
Koo, Bonyong (School of Mechanical Convergence System Engineering, Kunsan National Univ.)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.31, no.3, 2018 , pp. 155-163 More about this Journal
Abstract
One of the major disadvantages of isogeometric analysis(IGA) is that local refinement is nearly impossible in a conventional manner because of the tensor product nature in NURBS. In this research, we investigate a local refinement scheme for isogeometric analysis, named multi-resolution approach where different resolutions are employed at each subdomain, using h-refinement relation to endow displacement compatibility on an interface of subdomains. Then, we develop shape sensitivity analysis possessing same compatibility condition as in the analysis. Numerical examples are shown to demonstrate the computational efficiency of the method in analysis especially stress concentration problem and accurate sensitivity results which is also compatible on the interface.
Keywords
isogeometric analysis; h-refinement; multi-resolution; shape design sensitivity;
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Times Cited By KSCI : 1  (Citation Analysis)
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