含脱层复合材料圆柱壳的振动模态试验分析

Experimental Investigation on Vibration and Mode of Composite Cylindrical Shells with De-lamination

对复合材料圆柱壳在自由悬挂的边界条件下进行振动模态试验研究。介绍试验系统的构成及原理,提出试验方案。通过对7件复合材料圆柱壳试件进行系列化的振动模态试验及分析,讨论了不同铺层角度、脱层方式、脱层大小对复合材料结构的固有频率、振型的影响,与理论计算结果相比较,结果比较吻合。

A vibration experiment of free supported composite cylindrical shells with de-lamination was carried out. The component and principle of the experiment system was introduced. By the experimental results, the effect of lamination angle, length and range of de-lamination upon natural frequencies and mode of the composite shell was analyzed. The comparison between the experiment outcome and the numerical results indicates that those frequency results of the co posite cylindrical shells are in good agreement.