Abstract

In the presented study, maximum amplitude, frequency, and low-velocity impact characteristics of the angle-ply laminated curved panel under external excitation is presented. Hertz contact theory is used for modeling the contact force between the impactor and angle-ply laminated curved panel. Hamilton’s principle, and first-order shear deformation theory (FSDT) are presented for obtaining the governing equations of the angle-ply laminated curved panel, and impactor. For solving the time-dependent governing equations of the angle-ply laminated curved panel, and impactor, coupled Galerking, and Newmark methods is presented. In the first part of the results, the influence of viscoelastic parameters, young module ratio, the pattern of laminated layers, and other geometry of the angle-ply laminated curved panel on the free vibration characteristics of the current model under low-velocity impact are investigated. In the second one, the influence of density of impactor and young module ratio of the angle-ply laminated curved panel on the indentation, contact force, and indenter velocity are investigated in detail.

摘要

在本研究中，介绍了角层叠层曲面面板在外部激励下的最大幅度、频率和低速冲击特性。赫兹接触理论用于模拟冲击器和角层层压曲面面板之间的接触力。提出了哈密顿原理和一阶剪切变形理论 (FSDT) 以获得角层层压曲面面板和冲击器的控制方程。为了求解角层叠层曲面面板和冲击器的时间相关控制方程，提出了耦合的 Galerking 和 Newmark 方法。在结果的第一部分，粘弹性参数的影响，年轻模块比，层压层的模式，研究了角铺层层压曲面面板和其他几何形状对当前模型在低速冲击下的自由振动特性的影响。在第二部分中，详细研究了冲击器密度和角层层压弯曲面板的年轻模块比对压痕、接触力和压头速度的影响。