非线性吸振器的研究

Analysis of a Non-linear Dynamic Vibration Absorber

本文研究非线性吸振器的力学特性,从理论上探讨了含三次非线性的系统对拓宽吸振器有效频带的作用。最后,以几组不同参数的计算结果为例,与线性吸振器及无吸振器情况下的振幅——频率曲线相比较,来展示本方法的有效性和优越性。同时也表明,选择适当的参数,完全有可能使吸振器符合工程实际中对有效频率带宽的要求。因此,本方法具有较高的实用价值和较好的工程应用前景。

This paper is concerned with the non-linear dynamic vibration absorber. The study of the usage of the non-linear system with cubic nonlinearity to widen the suppression frequency band is presented. In order to show the usefullness and advatage of this method, some numerical resualts with different parameters are prensented. The frequency-response curves are also drawn, which are compared with the linear dynamic vibration absorber and the non-absorber system. It can be seen that by choosing the suitable parameters, it is possible to make the absorber to fit the requirement of engineering. so, the present method has strong practicality and bright future in application.