1906 非線形性を考慮したFRP積層円筒殻の振動最適化(OS-19B 複合材構造,OS-19 計算力学と最適化)

概要

論文の詳細を見る
This paper presents the optimization for nonlinear and linear vibration of laminated composite, circular cylindrical shells by Genetic Algorithm (GA). For this purpose, a backbone curve equation for primary resonance of the shell is derived analytically from nonlinear vibration analysis using both of Galerkin's method and harmonic balance method, In optimization problem, fiber angles for each lamina of a symmetrically balanced laminated shell are taken as discrete design variables, and men nonlinear natural frequency and linear natural frequency are considered as object functions to be maximized. In numerical calculations a scalar method or a Multi-Objective GA is employed for the present problem and parete optimum solutions are obtained, respectively. Finally optimal stacking sequence of the shell is studied by considering both of the linear vibration and nonlinear vibration characteristics of the shell.
一般社団法人日本機械学会の論文
2005-11-17