约束阻尼层合板的稳态响应

基于Reddy分层理论推导出约束阻尼层合板的稳态振动方程,得到了约束阻尼层合板的振动频率和损耗因子;分别分析了约束阻尼层合板的粘弹性夹层厚度、模量对固有频率和损耗因子的影响;得到了稳态振动时振幅和频率曲线以及横向应力与面内应力。数值计算结果表明所采用的算法是可靠的。

Steady state response and stress analysis of constrained damping laminated plates

Based on the Reddy theory,the governing equations for the steady state vibration of the constrained damping laminated plate are derived.The characteristic frequency and the loss factor are obtained.The effects of the module and the thickness of viscoelastic layer,on the frequence and the loss factor,are analyzed.Not only the curve of amplitude to frequencies but also transverse stresses and in-plane stresses are obtained for steady state vibration of constrained damping laminated plates.The results show that the method,the equations and the programs are reliable.