The needs to investigate the effect of road surface vibrations to the fatigue life of a coil spring

Abstract

The study aims to investigate the effect of vibrations on the fatigue life of an automotive coil spring. Acceleration signals were measured at a coil spring while the passenger car was being driven on road surfaces. Using a developed multi-body dynamic simulation, the acceleration signals were transformed into strain signals, and then, they were utilized as the input for performing fatigue tests. From the results, it was obtained that the rough road surface provided a shorter fatigue life, which was 64.5 %. It indicated that rough road surfaces significantly effect to component life.