基于刚度-阻尼器调谐质量阻尼器(SD-TMD)新模型策略的性能评价

Performance assessment of new modeling strategy of stiffness-dashpot-based tuned mass damper

利用导出的设置基于刚度-阻尼器调谐质量阻尼器(SD-TMD)结构和SD-TMD的传递函数,建立了SD-TMD结构系统的动力放大系数。于是,SD-TMD最优参数与有效性的评价准则为:设置SD-TMD结构最大动力放大系数中最小值的最小化。而SD-TMD冲程的评价准则为:SD-TMD动力放大系数的最大值。基于上述的两个评价准则,研究了刚度比R对SD-TMD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TMD(即R=0的SD-TMD)的数值结果。

Employing the derived transfer functions of the structure,with the stiffness-dashpot-based tuned mass damper(SD-TMD),and the SD-TMD,the dynamic magnification factors of the SD-TMD structure system are formulated.The assessment criterion of the optimum parameters and effectiveness of the SD-TMD is then the minimization of the minimum values of the maximum dynamic magnification factors of the structure with the SD-TMD.The evaluation criterion of the SD-TMD stroke is selected as the maximum dynamic magnification factor of the SD-TMD.Parametric studies for the influences of the stiffness ratio(R)on the performance(involving the optimum parameters,effectiveness,and stroke)of the SD-TMD are then carried out using the two assessment criteria above.For the purpose of comparison,the numerical results of the traditional TMD,namely the SD-TMD with thd stiffness ratio(R) equal to zero,are also taken into consideration in the present paper.