OS1413 摂動法による複合材料のマルチスケール確率応力解析の高精度化に関する検討(OS14-3 複合材料・導電材料の弾性数理解析,OS-14 弾性数理解析の発展と新展開1)

概要

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This paper discusses a numerical method for improving accuracy of the perturbation-based multiscale stochastic stress analysis for a composite material. This multiscale stochastic stress analysis will be performed via the stochastic homogenization analysis, and sometimes the accuracy becomes worse caused by a nonlinear or non-smooth response for a microscopic random variation. For this problem, an interval numerical integration for computation of variance or other stochastic moments is employed. As a numerical example, variance and the coefficient of variance of the maximum stresses observed in the microstructure of a composite material caused by a random variation of a component material property are estimated. From the numerical results, effectiveness of the proposed method is discussed.
一般社団法人日本機械学会の論文
2011-07-16