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兵工学报 ›› 2016, Vol. 37 ›› Issue (11): 1976-1982.doi: 10.3969/j.issn.1000-1093.2016.11.002

• 论文 • 上一篇    下一篇

典型使用条件对大口径机枪枪管寿命影响研究

齐玉辉1, 杨明华2, 单永海3, 徐诚1   

  1. (1.南京理工大学 机械工程学院, 江苏 南京 210094; 2.装甲兵工程学院 兵器工程系, 北京 100072;3.63856部队, 吉林 白城 137001)
  • 收稿日期:2016-02-02 修回日期:2016-02-02 上线日期:2016-12-30
  • 作者简介:齐玉辉(1977—),男,副研究员, 博士研究生
  • 基金资助:
    国家自然科学基金项目(51575279)

Influences of Typical Service Conditions on the Barrel Life of Large-caliber Machine Gun

QI Yu-hui1, YANG Ming-hua2, SHAN Yong-hai3, XU Cheng1   

  1. (1.School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China;2.Department of Arms Engineering,Academy of Armored Force Engineering, Beijing 100072, China;3.Unit 63856 of PLA,Baicheng 137001, Jilin, China)
  • Received:2016-02-02 Revised:2016-02-02 Online:2016-12-30

摘要: 大口径机枪枪管寿命与使用方式、使用条件密切相关,研究使用条件对大口径机枪枪管寿命的影响问题对于安全、有效地使用该类武器具有重要意义。选择环境温度、冷却周期射弹总量和换弹箱停留间隔时间3个使用条件,采用枪管热-弹耦合有限元模型计算枪管铬钢结合部位瞬态应力,使用局部应力-应变法计算枪管铬钢结合部位寿命,分析使用条件对枪管使用寿命的影响情况。进一步采用实物寿命试验验证使用条件对枪管使用寿命的影响,获得了定量影响规律,建立了环境温度、冷却周期射弹量、换弹箱停留间隔时间与寿命关系近似模型,为科学地使用该类大口径机枪提供了参考依据。

关键词: 兵器科学与技术, 机枪, 枪管寿命, 使用条件, 热弾耦合, 寿命建模

Abstract: The barrel life of large-caliber machine gun is closely related to the service mode and condition. The research on the influences of service conditions on barrel life is of great importance to the safe and effective use of this kind of weapons. The influences of the ambient temperature, the total amount of projectiles shot in a cooling cycle and the interval time of box magazine exchanges on barrel life of large-caliber machine gun are studied. The interface transient stress between chrome layer and steel body in barrel bore is obtained by thermoelastic coupling FEA model of gun barrel. The fatigue life of interface between chrome layer and steel body in barrel bore is solved by using local stress-strain method. The influences of service conditions on barrel life are analyzed. The influences of three service conditions on barrel life are also studied. The rules of quantitative influences of three service conditions on barrel life are obtained. A life approximation model of 12.7 mm machine-gun barrel based on the ambient temperature, the total amount of projectiles shot in a cooling cycle and the interval time of box magazine exchanges is established.

Key words: ordnance science and technology, machine gun, barrel life, service condition, thermoelastic coupling, life modeling

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