According to the loading mode and failure mechanism of a certain anti-detaching spring, a testing device for creep of anti-detaching spring was designed and manufactured. The creep accelerated aging test was done, and the effect of the temperature and loading on the creep behavior of antidetaching spring was investigated with image measuring technology. Furthermore, the creep kinetic equation of anti-detaching spring subjected to loading and temperature based on Arrhenius equation was derived to predict the service life of the anti-detaching spring. The results show that the displacement of the spring due to creep is a monotonic non-decreasing function of time. Increasing the temperature or initial preload will result in accelerating its creep displacement. The method and conclusion may be helpful in creep anti-detaching spring design and life prediction.
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孔繁杰,崔辉如,刘夏杨,等.止脱弹簧的蠕变行为与贮存寿命预测. Creep behavior and life predication for anti-detaching spring[J].国防科技大学学报,2017,39(5):74-79.