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首页> 外文期刊>Journal of aerospace engineering >Dynamic Response of FG-CNT Composite Plate Resting on an Elastic Foundation Based on Higher-Order Shear Deformation Theory
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Dynamic Response of FG-CNT Composite Plate Resting on an Elastic Foundation Based on Higher-Order Shear Deformation Theory

机译：基于高阶剪切变形理论的弹性基础休息FG-CNT复合板的动力响应

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摘要

In this paper, the dynamic response of a functionally graded carbon nanotube-reinforced (FG-CNTRC) composite plate is obtained based on higher-order quasi-three-dimensional (3D) shear deformation theory (i.e., assuming a linear variation of transverse displacement through the thickness). The governing equations of motion are developed using the energy principle and solved using finite-element methods. Newmark's time integration techniques are employed to obtain the forced response of FG-CNTRC plates. The accuracy of the present formulation is validated by tackling a few numerical cases and comparing finite-element solutions with accessible outcomes. Also, several new results are obtained for covering various features like thickness ratio, aspect ratio, and fiber volume fraction, among others, which can be considered as the benchmark study for future researchers. The outcomes demonstrate that the impact of Winkler foundation stiffness is not as great as the shear foundation stiffness on the natural frequency of the FG-CNTRC plates. The results also show that the free-vibration regime of the plate is highly influenced by duration of dynamic load on the plate. The present formulation gives excellent concurrence with the accessible literature.
机译：在本文中，基于高阶准三维（3D）剪切变形理论获得了功能梯度碳纳米管增强（FG-CNTRC）复合板的动态响应（即，假设横向位移的线性变化通过厚度）。运动的控制方程是使用能量原理开发的，并使用有限元方法解决。采用纽马克的时间集成技术来获得FG-CNTRC板的强制响应。通过解决一些数值案例并将有限元溶液与可接近的结果进行比较来验证本制剂的准确性。此外，获得了几种新结果，用于覆盖厚度比，纵横比和纤维体积分数等各种特征，其中可以被认为是未来研究人员的基准研究。结果表明，Winkler基础刚度的影响并不像FG-CNTRC板的固有频率上的剪切基础刚度一样大。结果还表明，板的自由振动方案受到板上动态负荷持续时间的高度影响。目前的制剂与无障碍文献提供了优异的同意。

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