重型机械Issue(2)：61-67,7.
短夹紧比液压螺栓回弹行为数值模拟研究
Numerical simulation research on the rebound phenomenon of small slenderness ratio hydraulic tie bolt
王寅超 1苏浩朋 2李少林 2石多奇 2齐红宇 2陈庆森1
作者信息
- 1. 中国联合重型燃气轮机技术有限公司,北京 100015
- 2. 北京航空航天大学 能源与动力工程学院,北京 100191
- 折叠
摘要
Abstract
To address the difference between the actual pre tightening force and initial pre tightening force before and after assembly,a numerical simulation method for the rebound behavior of hydraulic bolts with small slenderness ratio is proposed.Firstly,a numerical simulation grid model of small slenderness ratio bolts was established to simulate the entire process of using a hydraulic tensioner to stretch bolts,tighten nuts,and remove the tension of the hydraulic tensioner to complete assembly.Secondly,the stress distribution of bolt connections during the assembly process was analyzed,and the causes of rebound behavior were discussed.Finally,the simulations of rebound were conducted considering the effects of different assembly preload forces and slenderness ratios,and the simulation results were compared and analyzed with the test results.The results show that small slenderness ratio bolts will experience significant rebound when pre tightened using a hydraulic tensioner.The rebound coefficient of bolted connection structures is significantly affected by their slenderness ratio;The larger the slenderness ratio is,the smaller the rebound coefficient is;The rebound coefficient value obtained from simulation is independent of the assembly preload force;The numerical simulation results are in good agreement with the experimental results,with an error within 12%,which shows the feasibility of the numerical simulation method.关键词
短夹紧比螺栓/液压螺栓/回弹变形/数值模拟方法Key words
small slenderness ratio bolt/hydraulic tie bolt/rebound phenomenon/numerical simulation method分类
机械制造引用本文复制引用
王寅超,苏浩朋,李少林,石多奇,齐红宇,陈庆森..短夹紧比液压螺栓回弹行为数值模拟研究[J].重型机械,2025,(2):61-67,7.
