TEST AND NUMERICAL ANALYSIS OF SLIP LOOSENING OF STUD UNDER TRANSVERSE CYCLIC LOADING

ZHAO Zhenlong; QI Tonghui; SUN Yu; QIN Wenjie; ZHUANG Shijun; WANG Lan

doi:10.16579/j.issn.1001.9669.2026.02.014

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TEST AND NUMERICAL ANALYSIS OF SLIP LOOSENING OF STUD UNDER TRANSVERSE CYCLIC LOADING

·Experimental Research·Testing Technology· | 更新时间：2026-02-12

- TEST AND NUMERICAL ANALYSIS OF SLIP LOOSENING OF STUD UNDER TRANSVERSE CYCLIC LOADING
- Journal of Mechanical Strength Vol. 48, Issue 2, Pages: 120-125(2026)
- 作者机构：
  
  1.内燃机与动力系统全国重点实验室，潍坊 261205
  2.潍柴动力股份有限公司，潍坊 261001
  3.北京理工大学机械与车辆学院，北京 100081
- 作者简介：
  
  QIN Wenjie, E-mail: qinwj@bit.edu.cn
- 基金信息：
  
  Open Fund Project of State Key Laboratory of Engine and Powertrain System(SKLER-202111)
- DOI：10.16579/j.issn.1001.9669.2026.02.014
  CLC： V415.1
- Received：25 May 2024，
  
  Published：15 February 2026
- 稿件说明：
移动端阅览
赵振龙，祁同晖，孙宇，等. 横向循环载荷作用下螺柱滑移松动的试验测试及数值分析［J］. 机械强度，2026，48（2）：120-125.

ZHAO Zhenlong，QI Tonghui，SUN Yu，et al. Test and numerical analysis of slip loosening of stud under transverse cyclic loading［J］. Journal of Mechanical Strength，2026，48（2）：120-125.
赵振龙，祁同晖，孙宇，等. 横向循环载荷作用下螺柱滑移松动的试验测试及数值分析［J］. 机械强度，2026，48（2）：120-125. DOI： 10.16579/j.issn.1001.9669.2026.02.014.

ZHAO Zhenlong，QI Tonghui，SUN Yu，et al. Test and numerical analysis of slip loosening of stud under transverse cyclic loading［J］. Journal of Mechanical Strength，2026，48（2）：120-125. DOI： 10.16579/j.issn.1001.9669.2026.02.014.

摘要

目的

在横向循环载荷作用下，螺纹连接结构的接触面间会产生微动滑移，引起旋转松动，损害系统的性能，甚至引发重大安全事故。以承受横向循环载荷的紧螺纹螺柱连接结构为研究对象，运用试验测试和有限元仿真的方法对其接触界面的滑移行为进行考察，可为螺纹连接结构的可靠性设计提供支撑。

方法

采用基于摩擦纳米发电机原理的自驱动传感器测量螺母的旋转滑移位移，实现了对螺柱松动的监测。对在横向循环载荷作用下螺柱连接结构的接触滑移情况进行有限元仿真，考察了几个不同幅值循环载荷下螺纹连接结构中螺母支承面和螺纹接触面的滑移行为。

结果

结果表明，螺母支承面发生了完全滑移；而与下连接件接触的螺纹面则仅发生了局部滑移；部分螺纹圈1个载荷循环内的所有接触面在不同时刻都发生了过滑移，即蠕动滑移。随着循环载荷次数的增加，发生蠕动滑移的螺纹圈数增加。在预紧力相同的情况下，横向循环载荷的幅值越大，所有螺纹面越早进入蠕动滑移状态，螺柱也松动得越快。

Abstract

Objective

Micro slip will occur at contact interfaces in threaded connection structures under transverse cyclic loading

causing looseness， damaging the performance of the system

and even leading to serious safety accidents. Taking the tightly threaded stud connection structure under transverse cyclic loading as the research object

the slip behavior of its contact interface was investigated by means of testing and finite element simulation

which can provide support for the reliability design of threaded connection structures.

Methods

A self-driven sensor based on the principles of triboelectric nanogenerators was used to measure the rotational slip displacement of the nut and monitor the loosening of the stud. The finite element simulation was conducted to simulate the contact slips in the stud connection structure under transverse cyclic loads

and the slip behaviors of the nut bearing surface and the thread contact surfaces in the threaded connection structure under several different amplitude cyclic loads were investigated.

Results

The results indicate that the nut bearing surface experienced complete slip

while the thread surface in contact with the lower connecting part only experienced local slip. All contact surfaces of the partial thread turns exhibited overslip at different moments within one load cycle

i.e.

creep slip. As the number of load cycles increased

the number of thread turns that experienced creep slip would increase. Under the same preloading force

the larger the amplitude of transverse cyclic load

the earlier the whole threaded surface became creep slipping

and the faster the stud loosened.

关键词

Keywords

references

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