A parametric study on the stress analysis and transient response of thick-laminated-faced cylindrical sandwich panels with transversely flexible core
A parametric study on the stress analysis and transient response of thick-laminated-faced cylindrical sandwich panels with transversely flexible core
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DOI：
10.1016/j.ast.2015.10.016
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发表时间：
2016
影响因子：
5.6
通讯作者：
M. Khanjani;M. Shakeri;M. Sedighi
中科院分区：
文献类型：
--
作者：
M. Khanjani;M. Shakeri;M. Sedighi
本文采用高阶夹层板理论，研究了芯层厚度、曲率半径和扇形角等重要参数对复合材料柱面夹层板静动力响应的影响。高阶理论采用一阶剪切变形壳理论(FSDT)和等效弹性理论(FSDT)，考虑了面内位移和岩心横向位移的非线性所引起的高阶效应。利用哈密顿原理导出了运动方程和相应的边界条件。对于简支板，闭合形式解可以通过Navier技术来实现。然而，对于动力分析，采用Newmark方法在时间域内求解。最后，对影响夹层板静动力响应的关键变量的作用进行了数值参数研究。
In the present work the effects of important parameters such as core thickness, radius of curvature and sector angle on the static and dynamic response of composite cylindrical sandwich panels have been investigated using a higher-order sandwich panel theory (HSAPT). The presented higher-order theory, which applies first-order shear deformation shell theory (FSDT) for the face sheets and the equivalent elasticity theory for the core, is a rigorous approach that includes the higher-order effects incurred by the nonlinearity of the in-plane and transverse displacements of core. Equations of motion along with associated boundary conditions are derived by using Hamilton's principle. For simply-supported panels closed-form solutions can be achieved by Navier techniques. However, for dynamic analysis, the solution is obtained in the time domain by implementing Newmark method. Finally numerical parametric studies are performed to provide some insight into the roles of key variables that influence the static and dynamic response of sandwich panels.