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초록

This study presents a novel approach by incorporating the isogeometric concept into the topology optimization of shell structures. Utilizing the Kirchhoff-Love theory, the isogeometric shell element provides a rigorous framework for analyzing the linear elastic behavior of shells subjected to static loads. The present method uses Non-uniform Rational B-splines (NURBS) to accurately construct both geometric and analysis models. A node-wise updating scheme is implemented to redistribute materials within the shell structures, to find the layouts that improve structural performance with less materials. Four numerical tests prove that the proposed isogeometric topology optimization procedure is highly effective and efficient in determining the optimal topology of shell structures, thereby contributing to advancements in curved shell design practices. © 2026 Architectural Institute of Korea.

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