周辺固定されたクロスプライ積層扁平シェルの自由振動解析

概要

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For the free vibration of a laminated FRP (fiber reinforced plastic) composite plate, the authors proposed a numerical approach using the functions for a static bending problem. By this approach, one can accurately estimate the natural frequency and mode shape of plates with various shapes and boundary conditions. In the present paper, this approach is modified for application to a cross ply laminated shallow cylindrical shell of rectangular planform. First, numerical calculations are carried out for a clamped symmetric cross ply laminated shallow cylindrical shell of square plan-form. The convergence of natural frequency of the shell are discussed. The effects of the layer material and the number of layers on the natural frequencies and mode shapes of the shell are numerically investigated. Next, by the vibration tests of clamped symmetric cross ply laminated shallowcylindrical shell of square planform, natural frequencies and mode shapes are obtained. From the comparison between experimental and numerical results, it follows that one can accurately estimate the natural frequency and mode shape using the numerical approach proposed by the authors.
一般社団法人日本機械学会の論文
1999-06-25