Research on Equivalent Relationship Between Constant Amplitude Bench Test and Road Test of Top Mount

The top mount is a component bonded by rubber and metal vulcanization, which is used to connect the shock absorber assembly with the body, alleviate the impact from the road to the body, attenuate the vibration caused by it, and ensure the comfort of the passengers. At present, the bench test of the rubber part is mainly based on the constant amplitude loading bench test, which is mostly used for comparative analysis. The corresponding relationship with the road test is unknown, so it is impossible to predict the life of the part on the whole vehicle. Based on the theory of linear fatigue cumulative damage, the correlation between the test of the top mount and the random test of load spectrum is obtained, and the equivalent relationship between the equal amplitude bench test and the road test is obtained.