Research on Residual Stress Distribution and Parameter Optimization After Rolling at Root Fillet of Bolt

LIU Jingying; LI Haonan; XU Hao; YANG Zhishuo; ZHAO Yanwei; BAI Qingshun

doi:10.16080/j.issn1671-833x.2024.18.060

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Research on Residual Stress Distribution and Parameter Optimization After Rolling at Root Fillet of Bolt

更新时间：2025-10-30

- Research on Residual Stress Distribution and Parameter Optimization After Rolling at Root Fillet of Bolt
- Aeronautical Manufacturing Technology Vol. 67, Issue 18, Pages: 60-65(2024)
- 作者机构：
  
  1. 天津市紧固连接技术企业重点实验室,天津,300300
  2. 航天精工股份有限公司,天津,300300
  3. 哈尔滨工业大学,哈尔滨,150001
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671-833x.2024.18.060
  CLC：
- Published：2024
- 稿件说明：
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刘婧颖，李浩楠，徐昊，杨知硕，赵彦伟，白清顺. 螺栓根部圆角滚压的残余应力分布及参数优化研究[J]. 航空制造技术, 2024, 67(18): 60-65，72.

LIU Jingying, LI Haonan, XU Hao, YANG Zhishuo, ZHAO Yanwei, BAI Qingshun. Research on Residual Stress Distribution and Parameter Optimization After Rolling at Root Fillet of Bolt[J]. Aeronautical Manufacturing Technology, 2024, 67(18): 60-65，72.
刘婧颖，李浩楠，徐昊，杨知硕，赵彦伟，白清顺. 螺栓根部圆角滚压的残余应力分布及参数优化研究[J]. 航空制造技术, 2024, 67(18): 60-65，72. DOI： 10.16080/j.issn1671-833x.2024.18.060.

LIU Jingying, LI Haonan, XU Hao, YANG Zhishuo, ZHAO Yanwei, BAI Qingshun. Research on Residual Stress Distribution and Parameter Optimization After Rolling at Root Fillet of Bolt[J]. Aeronautical Manufacturing Technology, 2024, 67(18): 60-65，72. DOI： 10.16080/j.issn1671-833x.2024.18.060.

摘要

面向高精度钛合金螺栓滚压工艺参数选择的难题，建立了螺栓根部圆角滚压的有限元仿真模型，研究了螺栓根部圆角滚压后残余应力的分布规律，分析了滚压速度、滚压时间、摩擦系数、涂层厚度及滚压力对残余应力分布的影响，获得了优选的滚压工艺参数组合。同时，在仿真结果的基础上，以根部圆角滚压残余应力积分中值最小为目标，建立了滚压强化工艺参数及残余应力的优化数学模型，获得了优化后的高精度螺栓根部圆角滚压强化工艺参数，并进行了有限元仿真和试验验证。研究结果为高精度螺栓的圆角滚压强化工艺提供理论指导和技术支撑。

Abstract

Facing the issue of selecting rolling process parameter for high-precision titanium alloy bolts

the finite element simulation model is built for the rolling at root fillet of bolt. The distribution law of residual stress at root fillet of bolt after rolling is studied. The effects of rolling speed

processing time

friction coefficient

coating thickness and rolling force on the distribution of residual stress are analyzed and the optimal choice of rolling parameters is obtained. Moreover

targeting on the goal of minimizing the median integral of residual stress in root fillet rolling

the mathematical model of rolling parameters and residual stress is established in accordance with the simulation results. The optimal process parameters of rolling strengthening for the root fillet of high-precision bolt are obtained through parameter optimization. Moreover

the finite element simulation and experimental verification are carried out to validate the optimal results. The research results can offer theoretical guidance and technical support for the fillet rolling strengthening technology of highprecision bolts.

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