【摘要】 首先介绍了线性粘滞阻尼的理论模型,以及使用锤击法进行模型试验推断结构阻尼的装置构成、试验过程和粘滞阻尼推算的一般方法,论述了利用Matlab工具软件进行阻尼推算的主要命令和精度控制原则.简述了粘滞阻尼与滞变阻尼模型之间的联系和对应关系,作为结构振动控制元件在强震下阻尼推算的理论基础.更多还原

【Abstract】 A method for evaluating the equivalent viscous damping of linear structure using Matlab toolbox based on impulse hammer test was presented in this paper.A general theoretical model of linear viscous damping was briefly introduced first,and the experimental setup,test procedure and calculation of equivalent viscous damping ratio of linear structures based on a dynamic impulse test were described as well as the accuracy consideration.The correspondence between viscous damping and hysteretic damping models was explained,which lays a basis for evaluating damping ratio of structural control element under major earthquake.更多还原