非線形構造-流体連成問題における感度解析手法の開発

概要

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In this study, the sensitivity analysis method for the steady-state fluid-structure interaction problem is presented. A strong coupling formulation and the Newton-Raphson method are utilized to solve the equilibrium equations for fluid and structure simultaneously. The semi-analytical differentiation method is adopted to calculate the sensitivities of the response. As the consistent tangent stiffness is already obtained in the finite element analysis, the sensitivities are efficiently calculated. One illustrated example of large deformation structure subjected to fluid force is demonstrated. The accuracy of the sensitivities by the present method is discussed. Finally, a simple optimization problem is solved by using the calculated sensitivities along with the steepest descend method. The satisfactory result is obtained.
一般社団法人日本機械学会の論文
2002-09-25