基于有限元模擬的螺栓退刀槽滾壓輪優(yōu)化及試驗研究

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中圖分類號：TG729；TG668

DOI：10.3969/j.issn.1004-132X.2025.06.009

開放科學(xué)（資源服務(wù)）標(biāo)識碼（OSID）：

Optimization and Experimental Study of Bolt Retreat Groove Rolling Wheels Based on Finite Element Simulation

NIU Yanzhao1LIU Hongwei1SONG Yali2ZHU Xianglong1*HUANG Jiamei2KANG Renkel 1.School of Mechanical Engineering，Dalian University of Technology，Dalian，Liaoning，116024 2.AVIC Changhe Aircraft Industry（Group） Corporation Ltd.，Jingdezhen，Jiangxi，333000

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 whels was optimized based on finite element simulation outcomes of the interaction between the roling wheel and the bolt's retreat grooves. The optimized parameters were utilized to create the rolling tools，and a rolling experiments 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 material rolling wheel with diameter of 60mm and face angle of 45° . A rolling wheel fillet radius of 0.9mm produces the deepest residual compressive stress layers，a radius of 1.1mm yields the highest subsurface residual compressive stress value，and a radius of 1.2mm generates the maximum surface compressive stress. Trials were conducted with rolling tools featuring three distinct fillet radii，and the extended fatigue life of the bolts is ascertained with a 0.9mm fillet radius rolling wheels，thereby confirming the optimal configuration of the rolling tools.

Key words： finite element simulation；bolt retreat groove；rolling wheel； fatigue life；residualstress

0 引言

超高強度鋼具有高強度和良好塑性等優(yōu)點，被廣泛應(yīng)用于航空航天關(guān)鍵承力部件的制造[]。（剩余10647字）