FRP積層平板熱変形の確率有限要素解析

概要

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The thermal deformation of a fiber reinforced plastic laminated plate due to its material constant variability is formulated by the stochastic finite element method. Four elastic constants and two thermal expansion coefficients are taken as representing the spatial stochastic process. The rates of change of the finite element solution are obtained with regard to the said constants on the basis of the first order perturbation technique, and are employed to evaluate the variance of the plate deflection due to temperature distribution by the first order approximation in conjunction with the second moments of the probabilistic material constants. The numerical examples are carried out in regard to a boron/epoxy plate consisting of up to six layers, and the effects correlation and orthotropy of the probabilistic variables on the deflection variance are evaluated.
一般社団法人日本機械学会の論文
1986-12-25