对称层合板复合材料的屈曲变形解析
, PP. 140-146
Keywords: 屈曲载荷,压缩,剪切变形,复合材料,多项式,层合板
Abstract:
提出了如何利用2元多项式位移函数来分析层合板复合材料的屈曲问题。在解析中同时考虑到层合板的面外剪切变形。解析表明屈曲载荷在多项式项数大于20以上时趋于稳定,可得到高精度的解。本文并对对称角铺设层合板进行了系统地数值解析,明确了在各种边界拘束条件下材料的工程弹性系数,层合板长宽比,铺层数,层合角对屈曲载荷的影响,从而以达到优化设计。同时,验证了本解析法对任意边界条件下的层合板的屈曲解析是非常有效的。
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