Anti-loosening performance of toothed double nuts under lateral impact load
In view of the loosening of bolt connection structure under the impact of ship explosion,an anti-loosening structure of toothed double nut was designed.The anti-loosening principle of toothed double nut was analysed by using local slip theory,its anti-loosening performance was analysed by the change amount of pre-load and micro-slip through finite element simulation method,and the influencing factors of anti-loosening performance of toothed double nut and its influence rule were studied.The results show that the pre-load of toothed double nut decreases slowly and the changes of micro-slip are small,under the transverse impact load,showing a better anti-loosening performance.When the wedge angle is the same as the lead angle,the anti-loosening effect is the worst;the larger the wedge angle,the more the teeth number;the anti-loosening effect of toothed double nut gets better.
impact loadtoothed double nutfinite element simulationpre-loadmicro-slipwedge angletooth form numberanti-loosening performance
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维普
