嵌入式共固化复合材料夹芯板结构的自由振动

发布时间：2018-03-29 05:03

本文选题：复合材料　切入点：夹芯板　出处：《振动与冲击》2017年16期

【摘要】：基于一阶ZIG-ZAG理论和夹芯层的常复数模型,采用Navier解形式对铺层方式为(0°/90°/0°)的薄的四边简支三层夹芯板的自由振动进行分析。研究了在夹芯板总厚度不变的前提下,固有频率随着表层厚度的增加呈现先减小后增大的趋势,呈上凹抛物线状;损耗因子值随着表层厚度的增加呈现先增大后降低的趋势,分布呈下凸抛物线状,最大值出现在表层和底层厚度相等时,因此对称结构夹芯板为最优结构设计;在夹芯层厚度和位置一定的前提下,固有频率的值随着表层和底层厚度的增加而增大,损耗因子值随着表层和底层厚度的增加呈现先增加后减小的趋势,损耗因子存在最大值,为夹芯板结构的最优设计提供参考。
[Abstract]:Based on the first-order ZIG-ZAG theory and the constant complex number model of the sandwich layer, the free vibration of thin four-side simply supported three-layer sandwich panel with the mode of 0 掳/ 90 掳/ 0 掳is analyzed by using the Navier solution form. Under the condition that the total thickness of the sandwich plate is constant, the free vibration of the sandwich panel is analyzed. The natural frequency decreases first and then increases with the increase of the surface thickness, and the loss factor increases first and then decreases with the increase of the surface thickness, and the distribution is convex parabola. When the maximum value appears in the thickness of the surface layer and the bottom layer is equal, the symmetrical sandwich plate is the optimal structure design, and the natural frequency increases with the increase of the thickness of the surface layer and the bottom layer under the premise of the thickness and position of the sandwich layer. The value of loss factor increases first and then decreases with the increase of the thickness of the surface and bottom layer, and the loss factor has the maximum value, which provides a reference for the optimal design of sandwich panel structure.
【作者单位】：潍坊科技学院机械工程学院;青岛理工大学机械工程学院;
【基金】：国家自然科学基金(51375248)
【分类号】：TB33

【相似文献】