NARROW-BAND EXCITATION OF HYSTERETIC SYSTEMS

The stationary response of smooth and bilinear hysteretic systems to n arrow-band random excitations is investigated by using the quasistatic method and digital simulation. It is shown that the response is quali tatively different in different ranges of values of the ratio of the e xcitation central frequency to the natural frequency of the system. In the resonant zone, the response is essentially non-Gaussian. For bili near hysteretic systems with strong yielding, stochastic jumps mall oc cur for a range of values of the ratio between nonresonant and resonan t zones.