Dynamic Response of Elastic Plates Subject to Nonstationary Random Excitation.

摘要

The transient mean-square response of a nonlinear single-degree-of-freedom mechanical system to nonstationary random excitation characterized by the product of an envelope function and a stationary Gaussian random process is determined by the equivalent linearization technique. A unit step envelope function is considered in conjunction with both correlated and white noise with zero mean. It has been shown that for white noise modulated by a unit step function, the transient mean-square response never exceeds the stationary response. However, the mean-square response to correlated noise modulated by a unit step function may exceed its stationary value.