轻工机械2025，Vol.43Issue(3)：23-31,38,10.DOI:10.3969/j.issn.1005-2895.2025.03.004
悬臂螺栓连接梁螺栓布局及预紧扭矩松弛研究
Bolt Layout and Preload Torque Relaxation in Cantilever Bolt Joint Beam
摘要
Abstract
In order to solve the problem of bolt layout and preload torque relaxation in cantilever bolt joint beam,the research group established three finite element models of different bolt layouts,studied the influence of different layout on the pressure coupling,natural frequency and stiffness of joint beam through static analysis and frequency response function,and selected the optimal layout structure of joint beam.Based on this structure,finite element static analysis and frequency sweep experiments for preload torque relaxation in cantilever bolt joint beam were carried out to study the effects of loosening degree,number and position of bolt on the natural frequency and stiffness of beam.The results show that it is more reasonable to arrange bolts evenly on the joint surface.The experiment and finite element analysis of preload torque relaxation show that the more number of bolts loosening in the cantilever bolt joint beam and the farther between bolt position and fixed end,the more significant influence on natural frequency and stiffness of the structure.This study provides a basis for optimal design and failure monitoring of cantilever bolt joint beam.关键词
螺栓连接/有限元分析/预紧扭矩松弛/螺栓布局/频率响应函数/固有频率Key words
bolt joint/FEA(Finite Element Analysis)/preload torque relaxation/bolt layout/frequency response function/natural frequency分类
机械工程引用本文复制引用
程卓,陈剑,朱尧,孙岩辉,毛竹群..悬臂螺栓连接梁螺栓布局及预紧扭矩松弛研究[J].轻工机械,2025,43(3):23-31,38,10.基金项目
国家自然科学基金(52005381) （52005381）
陕西省自然科学基础研究计划资助项目(2022JQ-340). （2022JQ-340）
