中国机械工程2025，Vol.36Issue(6)：1214-1221,8.DOI:10.3969/j.issn.1004-132X.2025.06.009
基于有限元模拟的螺栓退刀槽滚压轮优化及试验研究
Optimization and Experimental Study of Bolt Retreat Groove Rolling Wheels Based on Finite Element Simulation
摘要
Abstract
The bolt retreat groove surfaces were susceptible to stress concentration and prone to fatigue failure.To bolster the fatigue resistance of bolt's retreat groove surfaces,a specialized rolling tool for the retreat grooves was engineered.The structure of the rolling wheels was optimized based on finite element simulation outcomes of the interaction between the rolling wheel and the bolt's re-treat grooves.The optimized parameters were utilized to create the rolling tools,and a rolling experi-ments were carried out.The effectiveness of the rolling wheel parameter optimization was validated by assessing the rolled surface quality,fracture morphology,and fatigue life.The findings indicate that the most favorable residual stress results on the retreat groove surfaces are obtained with a YG8 mate-rial rolling wheel with diameter of 60 mm and face angle of 45°.A rolling wheel fillet radius of 0.9 mm produces the deepest residual compressive stress layers,a radius of 1.1 mm yields the highest subsur-face residual compressive stress value,and a radius of 1.2 mm generates the maximum surface com-pressive stress.Trials were conducted with rolling tools featuring three distinct fillet radii,and the ex-tended fatigue life of the bolts is ascertained with a 0.9 mm fillet radius rolling wheels,thereby confir-ming the optimal configuration of the rolling tools.关键词
有限元仿真/螺栓退刀槽/滚压轮/疲劳寿命/残余应力Key words
finite element simulation/bolt retreat groove/rolling wheel/fatigue life/residual stress分类
金属材料引用本文复制引用
牛延昭,刘宏伟,宋亚丽,朱祥龙,黄佳美,康仁科..基于有限元模拟的螺栓退刀槽滚压轮优化及试验研究[J].中国机械工程,2025,36(6):1214-1221,8.基金项目
国家自然科学基金(52475431) （52475431）
