摘要
The phenomenon of vibrational resonance(VR)in an overdamped system with a sextic double-well potential under the excitation of two different periodic signals is investigated.The approximate analytical expression of the resonance amplitude Q at the low−frequencyωis obtained.The VR is observed,and the values of B(the amplitude of the high−frequency signal)andΩ(the frequency of the high−frequency signal)at which VR occurs are determined.Moreover,the relationship between B andΩis revealed.The theoretical predictions are found to be in good agreement with the numerical results.
作者
WANG Can-Jun
王参军(Nonlinear Research Institute,Baoji University of Arts and Sciences,Baoji 721007)
基金
by the National Natural Science Foundation of China under Grant No 11047146
the Science Foundation of the Education Bureau of Shaanxi Province under Grant No 09JK331
the Natural Science Foundation of Shaanxi Province under Grant No 2010JQ1014
the Science Foundation of Baoji University of Arts and Sciences under Grant No ZK0954.
