積層複合材料の振動伝達特性最適化

概要

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Dynamic characteristics as natural frequencies and modal damping ratios of laminated composite materials are influenced by the fiber orientations and the stacking sequence. Since the transfer functions of laminated composite structures are determined by these characteristics, we pay attention to the relations between the fiber orientations (including the stacking sequence) and transfer functions in order to minimize the vibrational response of structures. This paper presents an optimum design method of laminated composite structures to minimize the vibrational response. The optimization program evaluates the frequency response functions as an objective function of the genetic algorithm. With this evaluate function, the proposed method can minimize the vibrational response against the various vibrational forces in any frequency domains. As numerical examples, the proposed method is applied to the design of a rectangular plate and a cylindrical cantilever of CFRP.
社団法人日本機械学会の論文
2001-07-25