离散型设置粘弹阻尼结构的复模态综合法

本文利用粘弹材料的本构方程,对粘弹阻尼结构的模态分析表达式进行了理论推导,进而将Craig的复模态综合法推广到粘弹阻尼系统.本文还发展了一种处理刚体模态的方法,从而克服了Craig法的不足,解决了含粘性阻尼、粘弹阻尼的复杂结构的隔振设计问题.

COMPLEX MODE SYNTHESIS APPROACH OF DAMPED STRUCTURES WITH LUMPED DAMPERS

Based on the fractional calculus approach of viscoelastic materials, modal analysis of structures with these damping materials has been theoretically studied. The complex synthesis approach given by Craig are developed to the systems containing viscoelastic damping materials. An algorithm suitable for systems which substructures have some rigid modes is presented. So the problem of isolate designs of complex systems with various damping is solved.