Abstract: According to the modeling of a nonlinear system with hysteresis characteristics, indicate a new method. The model is constructed with higher order asymmetric rigidity force, viscous damping force and bilinear hysteretic force. From the parameters separated identification, establish the function relation between the parameters and the amplitude, frequency. The contrast result of the hysteresis curve of restoring force-displacement indicate that the model can describe thiskind of nonlinear vibration system’s character better, the modeling and the parameter identification method is practical and effective.

Key words: Hysteretic model, Math modeling, Parameters identification