Abstract: In this paper,the finite element analysis techique is applied to study the dynamic characteristics of the GRP/COM sandwich beams.and the experimental modal analysis method is used to verify the rightness of the finite element models and to make an optimization comparison with the effect to dynamic parameters of the beams at different FACE/CORE ratio and different density in experiments.

Key words: sandwich beam, dynamic analysis, modal anaiysis

摘要： 本文利用有限元法对玻璃钢复合材料[GRP/COM]夹层梁进行了动态分析,用实验模态分析法分析并验证了建立的有限元模型,并就FACE/CORE厚度比变化及夹心密度变化对夹层梁动态参数的影响进行了实验优化比较,取得了满意的结果

关键词: 夹层梁, 动态分析, 模态分析