그리드 쉘의 형태 디자인과 최적화

초록

This study presents a shape design optimization procedure for grid shells. It includes grid pattern generation, finite element mesh generationfor single-layer and double-layer grid shells, finite element analysis as well as definitions and implementations of structural optimization. Thegeometric model of the grid shells is defined using NURBS (Non-Uniform Rational B-spline), followed by finite element mesh generation onthe defined surface. For double-layer grid shells, diagonal members are generated between the top and bottom surfaces to complete a wholestructure. The entire optimization process leverages generic components of Grasshopper and relevant plug-ins. Numerical results demonstratethat the proposed procedure effectively controls the shape of a grid shell, making it applicable to practical structures.

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