中北大学学报（自然科学版）2026，Vol.47Issue(1)：1-7,7.DOI:10.62756/jnuc.issn.1673-3193.2025.07.0005
旋转自紧身管承载性能及工艺参数优化研究
Research on Load-Bearing Performance and Process Parameter Optimization of Rotational Autofrettage Gun Barrel
常列珍 1马新谋2
作者信息
- 1. 中北大学 航空宇航学院,山西 太原 030051
- 2. 中北大学 智能武器研究院,山西 太原 030051
- 折叠
摘要
Abstract
To elucidate the mechanism enhancing the load-bearing performance of gun barrels by rota-tional autofrettage technology,this study established a finite element model characterizing the stress distri-bution in normal barrels under chamber pressure.A systematic comparative analysis was conducted on the evolution of residual stress fields following autofrettage treatment at varying angular velocities.Subse-quently,chamber pressures of 450 MPa and 320 MPa were applied to the autofrettaged barrels to com-pute their stress responses during simulated firing.The research proposed a theoretical correction method for the plastic radius based on the Von-Mises yield criterion,effectively resolving the inaccuracies inherent in solutions derived from the traditional Tresca criterion.The corrected theoretical results showed excel-lent agreement with numerical simulations.By quantitatively analyzing the correlation between peak Von-Mises stress and autofrettage process parameters,the optimal angular velocity window(4 680～5 205 rad·s-1)and optimal overstrain range(32%～97%)for the rotational autofrettage process of the studied barrel were determined.These findings provide a critical design basis for engineering applications.关键词
旋转自紧/身管/残余应力/自紧度Key words
rotational autofrettage/gun barrel/residual stress/autofrettage degree分类
通用工业技术引用本文复制引用
常列珍,马新谋..旋转自紧身管承载性能及工艺参数优化研究[J].中北大学学报（自然科学版）,2026,47(1):1-7,7.
