Low-velocity impact response of viscoelastic material filled FG honeycomb reinforced laminate plate in hygrothermal environments
Low-velocity impact response of viscoelastic material filled FG honeycomb reinforced laminate plate in hygrothermal environments
复制标题
湿热环境下粘弹性材料填充FG蜂窝增强层合板的低速冲击响应
DOI：
10.1016/j.compositesb.2018.11.042
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发表时间：
2019-05
期刊：
影响因子：
--
通讯作者：
Wang L.
中科院分区：
文献类型：
--
作者：
Zhou X. Q.;Wang L.
本文研究了湿热环境下功能梯度蜂窝增强粘弹性复合材料层合板低速冲击动力响应。根据Hill的广义自洽模型确定了两相宏观结构层的等效力学性能。Reddy的高阶剪切变形理论（HSDT）被用来计算面内位移变量。将推广的汉密尔顿原理与有限元法相结合，采用瑞利比例阻尼，首先确定了整体质量、阻尼和刚度矩阵。利用Newmark法求出了FG蜂窝增强层合板的中心位移。其次，分析比较了湿热效应、冲击器半径和功能梯度因子等影响冲击过程中心位移的几个关键因素。此外，有限元法（FEM）被应用于获得的模式参数，并验证我们的分析的收敛性。最后，采用LS-DYNA显式解验证了本文的结果。
In the present study, the dynamic response of functionally gradient (FG) honeycomb reinforced and viscoelastic material (VEM) embedded composite laminate plates with low-speed impact in the hygrothermal environment is investigated. The equivalent effective mechanical properties of the two-phase macroscopic constructed layers are determined according to Hill's generalized self-consistent model. The Reddy's high-order shear deformation theory (HSDT) is employed to evaluate the in-plane displacement variables. By combining the extended Hamilton's principle with the finite element method and adopting the Rayleigh's proportional damping, the global mass, damping and stiffness matrices are determined first. Then, the central displacement of the FG honeycomb reinforced laminate plate is obtained with the aid of the Newmark's method. Next, several key factors affecting the central displacement in the whole impact duration are analyzed and compared, such as the hygrothermal effects, the radius of the impactor and the functionally gradient factor. Moreover, the finite element method (FEM) is applied to obtain the mode parameters and to verify the convergence of our analysis. Finally, the LS-DYNA explicit solution is employed to validate the present results.
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