关键词: 复合材料, 虚拟激励法, 精细积分法, 随机振动, 依赖频率阻尼

Abstract:

An efficient and accurate non-stationary random vibration algorithm for the composite laminated structures attached with viscoelastic damping layer is proposed. Both the Adams damping of the composite laminated structures and the attached frequency-dependant damping are taken into account in the analysis. For the resulting non-classically damped and frequency-dependant complex system, in combination with the real-mode-based degree-reduction scheme, the pseudo excitation method is developed and the precise integration method is applied to solve the reduced non-stationary random vibration equation.

Key words: composite,  , pseudo , excitation , method, precise , integration , method , non-stationary , random , vibra-tion, frequency-dependant , damping