基于铬层与基体结合部疲劳损伤的转管机枪身管寿命预测研究

doi:10.3969/j.issn.1000-1093.2016.10.020

兵工学报 ›› 2016, Vol. 37 ›› Issue (10): 1926-1933.doi: 10.3969/j.issn.1000-1093.2016.10.020

基于铬层与基体结合部疲劳损伤的转管机枪身管寿命预测研究

徐宁^1,2，吴永海^1,3，王永娟¹，徐诚¹

(1.南京理工大学机械工程学院, 江苏南京 210094; 2.南京理工大学格莱特纳米科技研究所，江苏南京 210094；3.淮阴工学院机电工程实验教学中心，江苏淮阴 223003)

收稿日期:2016-01-07 修回日期:2016-01-07 上线日期:2016-12-08
作者简介:徐宁(1982—)，男，博士研究生
基金资助:
国家自然科学基金项目(51575279)

Barrel Life Prediction of Rotating Barrels Machine Gun Based on Fatigue Damage of Chromium-steel Interface

XU Ning^1,2, WU Yong-hai^1,3, WANG Yong-juan¹, XU Cheng¹

(1.School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China;2.Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China;3.Experimental-teaching Center of Mechanical and Electrical Engineering, Huaiyin Institute of Technology, Huaiyin 223003,Jiangsu,China)

Received:2016-01-07 Revised:2016-01-07 Online:2016-12-08

摘要/Abstract

摘要： 为预测身管寿命，采用热-固耦合场理论、冲击疲劳理论和疲劳累积损伤理论，提出基于身管铬层与基体结合部疲劳损伤的身管寿命预测方法。以3管转管机枪的身管寿命为例，建立有限元模型，计算铬层与基体结合面的耦合应力，预测身管寿命，理论计算与试验结果进行了对比，数据基本吻合；分析身管镀铬层厚度对身管寿命的影响。研究结果表明：铬层与基体结合部的疲劳损伤寿命基本决定了身管的寿命，证明所提寿命预测方法是可行的；适当增加镀铬层厚度，可以提高身管寿命。

关键词: 兵器科学与技术, 自动武器, 身管, 耦合应力, 寿命, 疲劳, 预测模型

Abstract: To predict the life of a gun barrel, the theories of thermal-solid coupled stress, the impact fatigue and fatigue cumulative damage are used to derive the life prediction of a gun barrel based on fatigue damage of chromium-steel interface. A 3D finite element model for a 3-barrels rotating machine gun is built to calculate the coupling stress of chromium-steel interface. The barrel life of the rotating barrels machine gun is estimated. The estimated result is basically consistent with the experimental result. The analysis results show that the fatigue damage life at chromium-steel interface almost determines the life of the gun barrel. The effect of the thickness of chromium coating on the life of gun barrel is studied. The research result shows that the life of gun barrel can be improved by increasing the thickness of chromium coating properly.

Key words: ordnance science and technology, automatic weapon, gun barrel, coupling stress, life, fatigue, prediction model

中图分类号:

TJ202

徐宁，吴永海，王永娟，徐诚. 基于铬层与基体结合部疲劳损伤的转管机枪身管寿命预测研究[J]. 兵工学报, 2016, 37(10): 1926-1933.

XU Ning, WU Yong-hai, WANG Yong-juan, XU Cheng. Barrel Life Prediction of Rotating Barrels Machine Gun Based on Fatigue Damage of Chromium-steel Interface[J]. Acta Armamentarii, 2016, 37(10): 1926-1933.

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基于铬层与基体结合部疲劳损伤的转管机枪身管寿命预测研究

Barrel Life Prediction of Rotating Barrels Machine Gun Based on Fatigue Damage of Chromium-steel Interface

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