Shape Optimization of Shell Surfaces Based on Linkage Framework between B-spline Modeling and Finite Element Analysis

유한요소해석과 B-스플라인 모델링의 연동에 기초한 쉘 곡면의 형상 최적 설계

In the present study, a shape design optimization scheme in shell structures is implemented based on the integrated framework of geometric modeling and analysis. The common representation of B-spline surface patch is used for geometric modeling. A geometrically-exact shell finite element is implemented. Control points or the surface are employed as design variables. In the computation of shape sensitivity, semi-analytical method is employed. Sequential linear programming is applied to the shape optimization of surfaces. The developed integrated framework should serve as a powerful tool to design and analysis of surfaces.