Abstract
The purpose of this study is to determine the nonlinear vibration characteristics of a spring in order to analyze the vibration response of a vehicle. In the present paper, we constructed the hysteresis restoring force models dependant on amplitude and frequency from experimental results of a dynamic hysteresis test of the tapered leaf springs, and the spring constants and damping coefficients could be calculated by using a power-function-type restoring force model. Finally, we proved the accuracy of this method by directly comparing the analytical results with the experimental results on the vibration characteristics (spring constant, damping coefficient). Using the above method, it will become possible to calculate more precisely the nonlinear vibration response of vehicles.
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