主系统有阻尼时动力减振器的优化设计

当考虑振动系统有阻尼时,动力减振器设计的有关目标函数解析式变得更加冗长而繁杂,若用解析法求解优化参数几乎是不可能的。所以常见文献上有关动力减振器的优化参数都是在忽略主系统阻尼时得到的,这就使得与实际有较大的差异。本文使用电子计算机以动力放大因子、动柔度负实部等不同目标函数对主系统有阻尼的各种动力减振器进行优化设计,比较不同优化目标函数所得到的优化结果的差别,指出不同优化目标函数的应用场合。

OPTIMUM DESIGN OF THE DYNAMIC ABSORBER FOR THE MAIN SYSTEM WITH DAMPING

When the damping is considered to be a contributing factor in the design ofdynamic absorber forviberation system, the analytical formula of the objectivefunctions are found to be much more intricate and complicated. This makes italmost impossible to obtain the optimum parameters directly from these formu-la by analytics. Relevant references have offered inaccutate optimum parametersfor the dynamic absorber commonly with the damping of main system omitted.In this paper, various dynamic absorbers for damping system are optimized withcomputer under every different objective function (such as magnification factor,the negative real part of dynamic ampliance, etc.) Optimum results are comparedwith one another.The difference s between them are described,Occations differentobjectiv functions refer to and their respective optimum can be applied in arepointed out.