横向冲击载荷下齿形双螺母防松性能  

Anti-loosening performance of toothed double nuts under lateral impact load

作　　者：孟宪松[1] 马池 闫明[1] MENG Xiansong;MA Chi;YAN Ming(Liaoning Province Impact Protection and Damage Assessment Technology Engineering Research Center,Shenyang University of Technology,Shenyang 110870,Liaoning,China)

机构地区：[1]沈阳工业大学辽宁省冲击防护与损伤评估技术工程研究中心,辽宁沈阳110870

出　　处：《沈阳工业大学学报》2024年第1期91-96,共6页Journal of Shenyang University of Technology

基　　金：国防科技创新特区重点项目(20-163-00-TS-006-002-01)。

摘　　要：针对螺栓连接结构在舰船爆炸冲击中容易发生松动的现象,设计了一种齿形双螺母的防松结构。利用局部滑移理论分析齿形双螺母的防松原理,采用有限元仿真法,通过预紧力和微滑移的变化量对其防松性能进行分析,并研究了齿形双螺母防松性能的影响因素及其影响规律。研究结果表明:横向冲击载荷下,齿形双螺母预紧力下降慢,微滑移变化小,具有较好的防松性能;当楔形角与螺纹升角相同时,防松效果最差;楔形角越大,齿形数量越多,齿形双螺母的防松效果越好。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.

关 键 词：冲击载荷 齿形双螺母 有限元仿真 预紧力 微滑移 楔形角 齿形数量 防松性能 

分 类 号：TH131.3[机械工程—机械制造及自动化]