時刻歴応答を考慮した構造物の最適設計

抄録

In the typical structural optimization method, the structural eigenvalues or eigenvectors are modified in order to avoid various problems caused by the resonances. In this case, the optimization is done on frequency domain. However, in some cases the time history response is more important than the characteristics on frequency domain. In this paper, the optimizations of both natural mode and impulse reponse are performed by modifying the thicknesses and the nodal coordinates of the structure with the FEM model. Firstly, the theory of the optimization method is explained. Secondly, we apply this method to the optimization of an rectangular plate. The optimization of a natural mode and a impulse response are achieved. Finally, we combine this method with the component mode synthesis method in order to enable us to optimize the large structural systems.