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复合材料夹层壳振动分析的高阶剪切变形理论

, PP. 108-113

Keywords: 复合材料,夹层壳,剪切变形,位移模式,动态特性

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Abstract:

本文提出了计及复合材料面板横向剪切变形的夹层壳高阶位移模式,该模式满足夹层壳上、下表面剪应力为零的条件,并以此推导出夹层壳自由振动的有限元方程,讨论了夹层壳的夹芯及面板的阻尼特性,给出阻尼矩阵的形成方式,将数值计算与实验结果进行了对比,最后给出了阻尼比Ψ随夹芯厚度hc、剪切模量G和阻尼损耗因子β的变化曲线.

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