Forced vibration of a multidirectional nonlinear oscillator

This paper presents a nonlinear piezoelectric oscillator structure capable of collecting multi-directional vibrational energy. The structure is mainly composed of universal coupling, piezoelectric spring, flexible hinge and mass block. The dynamical response of the structure is similar to the spring pendulum system. The oscillator has two degrees of freedom: swing angle and the length of elastic. The forced vibration model of the multidirectional piezoelectric oscillator structure is established.