Stochastic finite element analysis of thermal deformation and thermal stresses of CFRP laminated plates. In problems of probabilistic fiber orientations.

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  • ＣＦＲＰ積層平板における熱変形と熱応力の確率有限要素解析　　繊維配向角が不確定な場合
  • CFRP セキソウ ヘイバン ニ オケル ネツ ヘンケイ ト ネツ オウリョク

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The effect of probabilistic fiber orientations on the response of carbon fiber reinforced plastic laminated plates due to thermal load is analysed by the stochasic finite element method based on the first order perturbation technique. The fiber orientations are taken as two-dimensional spatial stochastic process, and the stochasticity is represented by a trigonometrical autocorrelation function. Numerical analyses are carried out in regard to rectangular CFRP laminated plates subjected to a uniform temperature rise or constant temperature gradient through the thickness. The variance of thermal deformation and stresses is discussed for the input statistical property of the orientations.

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