不均匀板振动特性的数值计算与实验研究

摘要

提出了一种新的用于计算不均匀板的自由振动问题的离散方法.为了验证理论上获得的板材振动特性数值解的准确性,本文应用激光全息干涉法对板材的振动特性进行了实验研究,对等厚度板、不均匀板和带有孔缺陷的板材进行了数值计算和试验测量,并将数值计算值和试验值进行了对比,其试验结果分析表明,新开发的离散法具有很高的收敛性和准确性.%In this paper, a new discrete method is proposed to calculate the characteristics of free vibration of plates with non-uniform thickness. The experimental methods of laser holography interferometry are introduced to verify the accuracy of the numerical solution. The experiments have been done for plates with uniform, non-uniform thickness and with a hole defect The analytical results have been compared with experimental results. From above experimental results analysis, it is shown that the proposed discrete method has enough convergence and accuracy.