Vibration Characteristics of Rubber (Nonlinear Vibration Characteristics Depending on Frequency and Amplitude of Displacement)

In this paper, we describe a new method for analyzing nonlinear vibrational properties of rubber using experimental results of a dynamic hysteresis characteristics test of rubber vibration isolators used in automobiles. This method was developed based on equivalent linear system using the restoring force model of power function type. As a result of our studies, we are now able to determine the vibrational properties of rubber (dynamic spring constant and damping factor) in relation to frequency and amplitude of displacement. That is to say, we devised a theory of simulation that enables one to predict the vibrational properties of rubber using the area of the hysteresis loop and bone curve.