基于刚度-阻尼器ATMD模型的性能评价

PERFORMANCE ASSESSMENT OF STIFFNESS-DASHPOT-BASED ATMD MODEL

提出了基于刚度 -阻尼器主动调谐质量阻尼器 (SD -ATMD)新模型。利用导出的SD -ATMD -结构系统的传递函数 ,建立了SD -ATMD -结构系统的动力放大系数。于是SD -ATMD的最优参数与有效性的评价准则可定义为设置SD -ATMD结构最大动力放大系数中最小值的最小化。而SD -ATMD冲程的评价准则定义为SD -ATMD动力放大系数的最大值。基于上述两个评价准则 ,研究了刚度比 (R)对SD -ATMD性能 (最优参数、有效性和冲程 )的影响。为比较 ,同时考虑了传统的ATMD(即R =0 .0的SD -ATMD)的数值结果。。

The modeling of stiffness-dashpot-based active tuned mass damper (SD-ATMD)is proposed. Employing the derived transfer functions of the SD-ATMD structure system, the dynamic magnification factors of the SD-ATMD structure system are formulated. The assessment criterion of the optimum parameters and effectiveness of the SD-ATMD may be defined to be the minimization of the minimum values of the maximum dynamic magnification factors of the structure with SD-ATMD. The evaluation criterion of the SD-ATMD stroke is selected as the maximum dynamic magnification factor. Parametric studies for the influences of the stiffness ratio (R) on the performance (involving the optimum parameters, effectiveness, and stroke) of the SD-ATMD are carried out by using the two assessment criteria defined above. The results of the traditional ATMD, namely the SD-ATMD with the stiffness ratio (R) being equal to 0.0, are also taken into account.