the National Natural Science Foundation of China(Nos.11772084 and U1906233);the National High Technology Research and Development Program of China(No.2017YFC0307203);the Key Technology Research and Development Program of Shandong Province of China(No.2019JZZY010801)。
A consequence of nonlinearities is a multi-harmonic response via a monoharmonic excitation.A similar phenomenon also exists in random vibration.The power spectral density(PSD)analysis of random vibration for nonlinear...