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초록

This study presents a novel approach by incorporating the isogeometric concept into the topology optimization of shell structures. Utilizingthe Kirchhoff-Love theory, the isogeometric shell element provides a rigorous framework for analyzing the linear elastic behavior of shellssubjected to static loads. The present method uses Non-uniform Rational B-splines (NURBS) to accurately construct both geometric andanalysis models. A node-wise updating scheme is implemented to redistribute materials within the shell structures, to find the layouts thatimprove structural performance with less materials. Four numerical tests prove that the proposed isogeometric topology optimization procedureis highly effective and efficient in determining the optimal topology of shell structures, thereby contributing to advancements in curved shelldesign practices.

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