直交異方性積層平板の確率有限要素法による振動固有値解析

概要

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Uncertain eigenvalue problem of vibration is analysed by means of the stochastic finite element method. The fluctuation of stiffness of composite laminated plate is formulated in the form of Taylor series expansion with respect to probabilistic stacking sequence. The uncertain eigenvalue problem is solved by use of the stochastic finite element method in the case that the entire plate thickness remains constant. The second order approximation is employed to evaluate the expectations and variances of the eigenvalue and eigenvector under the assumption that the variables standing for uncertain orientation and layer boundary coordinates are Gaussian . Numerical analyses deal with the vibration of simply-supported Graphite/Epoxy plate. The sensitivity of the input stacking sequence and the correlation coefficients are evaluated quantitatively.
一般社団法人日本機械学会の論文
1985-05-25