A research on experiment and fatigue life prediction of rubber mounts under high temperature

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (15) : 66-71.

SHANGGUAN Wenbin1,2 LI Mingmin1 DUAN Xiaocheng1,2

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Abstract

A uniaxial tension fatigue test was carried out on a filled natural rubber specimens of two hardness(shore 45 and shore 50)under the temperature of 23℃,60℃ and 90℃. Based on the experimental data, fatigue life prediction models was established by using maximum Engineering strain as the damage parameters. The influence of different temperature, high temperature softening and hardness on the fatigue life of rubbers is investigated. A powertrain rubber mount was tested under 90℃ to obtain the fatigue life. A finite element model is established and the fatigue life of the rubber mount is estimated using the damage parameter calculated from the finite element model. The calculated fatigue life is compared with the measured, and the relative error is less than 10%. It is shown that the proposed fatigue life prediction models and the measurement method can be used to estimate the fatigue life of rubber mount under high temperature.

Key words

Filled natural rubber materials / High temperature fatigue life / Fatigue test / Fatigue life prediction model / Test verification

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SHANGGUAN Wenbin1,2 LI Mingmin1 DUAN Xiaocheng1,2. A research on experiment and fatigue life prediction of rubber mounts under high temperature[J]. Journal of Vibration and Shock, 2015, 34(15): 66-71

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