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何柏灵 , 赵桂平 , 卢天健 . 复合材料面层——泡沫金属夹芯板的振动及吸能特性分析 [J ] . 兵工学报 , 2014 , 35 ( 2 ): 228 - 234 . DOI: 10.3969/j.issn.1000-1093.2014.02.014 http://doi.org/10.3969/j.issn.1000-1093.2014.02.014 在冲击载荷作用下，泡沫金属夹芯板沿厚度方向存在不可忽略的压缩和剪切变形，故经典层合板理论不适用于这类夹芯结构的分析，必须考虑芯层的横向压缩和剪切变形。利用高阶理论考虑芯层的横向剪切和正应变，应用Kirchhoff理论分析上下面层。采用哈密尔顿方程和加权伽辽金法获得夹芯结构振动方程；根据振动方程，边界条件和初始条件，利用4阶Runge-Kutta法，在冲击载荷作用下，求出复合材料面层-泡沫金属夹芯板在弹性变形阶段的横向动态位移，同时求出夹芯板的固有频率并与有限元计算结果进行比较，二者吻合很好。讨论不同复合材料面层铺设角、阻尼比及芯层厚度参数对夹芯结构振动特性的影响，结果表明：改变复合材料面层铺设角及芯层厚度，可改变夹芯结构的整体刚度，进而影响结构的振动特性；阻尼耗散结构能量，可加速结构振动的衰减。通过分析复合材料面层-泡沫金属夹芯板的能量吸收特性，得出了由于泡沫芯层承受横向压缩和剪切变形而具有良好吸能特性的结论。

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