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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。
In this paper, the high-order displacement mode of sandwich shell considering the transverse shear deformation of the composite panel is proposed. The model satisfies the condition of zero shear stress on the upper and lower surfaces of the sandwich shell, and derives the finite element equation of free vibration of the sandwich shell. The damping characteristics of the sandwich and the panel of the sandwich shell are discussed. The formation of damping matrix is given. The numerical calculation and experimental results are compared. Finally, the damping ratio ψ with the sandwich thickness hc, the shear modulus G and Damping loss factor β curve.