有限要素法固有値解析を利用した異種積層複合材料の異方性パラメータ同定法

概要

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Elastic parameters are essentia for structural analysis. The elastic parameters of laminated composite materials, however, are difficult to determine by either theoretical or experimental approaches because of their anisotropy. This paper presents an inverse anaysis method to identify anisotropic parameters of laminated composite materials using FEM eigenvalue analysis. A shell element model is formulated for unsymmetrically laminated composites. The modal assurance criterion, MAC, is adopted to compare analyzed vibration modes with observed modes, because the order of vibration modes of anisotropic materials changes according to the ratio of elasticity E_L/E_T. As numerical examples, elastic Parameters of single-and multilayered composite plates are identified.
社団法人日本機械学会の論文
1996-04-25