Anti-loosening performance of toothed double nuts under lateral impact load
MENG Xiansong
MA Chi
YAN Ming
Abstract：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.
Keywords：impact loadtoothed double nutfinite element simulationpre-loadmicro-slipwedge angletooth form numberanti-loosening performance
Publication Date：2024-01-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 91-96 )