Vibration of laminated plates with adhesive joints

Meng-Kao Yeh, Yui-Long You
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引用次数: 6

Abstract

The fundamental frequency of laminated plates with single-stepped lap joints was investigated analytically and experimentally. For the analysis, a two-dimensional finite element code was developed and the fundamental frequencies of the laminated plates were extracted from the calculation of the smallest eigenvalue. In the experiment, external excitation was applied to the plates using an impact hammer. The frequency response functions of the laminated plates were obtained by a fast Fourier transform function built in a dynamic signal analyser from which the fundamental frequencies were obtained. The fundamental frequency decreased as the thickness of the adhesive layer increased. When the stacking sequence of the composite laminates was [θ/-θ]2s, the fundamental frequencies decreased as θ increased. The analytical predictions were compared with experimental results. The fundamental frequencies of the laminated plates were closer to the results of plates without adhesive joints when the difference between the Young's modulus of the adhesive and the longitudinal modulus of the laminated plates was decreased.

粘接层合板的振动
对单阶搭接层合板的基频进行了分析和实验研究。为了进行分析,开发了二维有限元程序,并从最小特征值的计算中提取了层合板的基频。在实验中,用冲击锤对板施加外部激励。在动态信号分析仪中建立快速傅里叶变换函数,得到复合材料的频响函数,并由此得到基频。基频随粘接层厚度的增加而减小。当复合材料层叠顺序为[θ/-θ]2s时,基频随θ的增大而减小。分析预测结果与实验结果进行了比较。当粘结剂的杨氏模量与层合板纵向模量之差减小时,层合板的基频更接近无粘结接缝板的结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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