不同参数组合的最优多重调谐质量阻尼器

Optimum Multiple Tuned Mass Dampers Considering Available Combinations of System Parameters

多重调谐质量阻尼器(MTMD)是由许多频率成线性分布的调谐质量阻尼器组成.可能的参数组合形成5种MTMD，即MTMD-1～MTMD-5.基于一般MTMD的传递函数，建立了MTMD-1～MTMD-5位移动力放大系数(DDMF)的统一模式.利用DDMF和数值搜寻技术进行了参数研究.参数包括频率间隔、阻尼比、调谐频率比和总数.研究表明：在工程应用中应优先选择MTMD-1.

Multiple tuned mass dampers (MTMD)consist of many tuned mass dampers with a uniform distribution of natural frequencies .Five types of MTMD(i,e,MTMD-1 to MTMD-5)are formed in light of available combinations of system parameters. Based on the transfer function of the general MTMD,the unified expression for the displacement dynamic magnification factor(DDMF)is derived for MTMD-1 to MTMD-5.Utilizing a numerical optimum researching technique ,a study is performed to investigate the optimum parameters, including :frequency spacing, damping ratio ,tuned frequency ratio and total number.It is demonstrated that it is preferable to select the MTMD-1 for engineering applications.