ZN-1型粘弹性阻尼材料模型参数修正研究

摘要

The mathematical model parameter update of ZN-1 viscoelastic damping material is studied in order to offer more accurate model for dynamic analysis of passive constrained layer damping (PCLD) structure. The model parameter is chosen as design variables. The minimum error of the PCLD beam frequency and loss factors are taken as the optimal object function. The model parameter of ZN-1 viscoelastic damping material is updated by hybrid genetic algorithm. The account results of PCLD beam dynamic characteristic by updated model parameter are closer to the experimental ones than the original model.%为了给被动约束阻尼( PCLD)结构的动力学分析提供更精确的粘弹性材料数学模型,进行了ZN-1型粘弹性阻尼材料模型参数修正的研究.以模型参数为优化变量,以PCLD悬臂梁固有频率和损耗因子的误差最小为优化目标,采用混合遗传算法修正了ZN-1型粘弹性阻尼材料模型参数.修正模型参数后PCLD梁动力学特性计算值比原始模型更接近于试验值.