随机参数反对称层合板响应的灵敏度分析及统计特性

Sensitivity Analyses and Statistical Properties Response to Antisymmetrically Laminated Composite Plates with Random Parameters

用随机摄动法,将纤维铺设方向、材料密度以及从层合板的上表面到中面的距离视为随机变量,研究了随机参数在确定性载荷下响应的灵敏度与统计特性.

The geometric material parameters of laminated composite plates were usually of random due to the effect of various un-deterministic factors in engineering structure. To study the sensitivity analyses and statistical properties of the plates with random parameters was of significant importance for estimating reliability of the structural design. With the perturbation methods, the directions of laid fibre, material density and distance from the upper surface to middle surface on the composite plates were regarded as randiom variable and the responsive sensitivites as well as statistic properties of random parameters under the condition of deteminative burden were studied in this paper.