[1]李树立,杨国来.高压高速工况下弹炮间摩擦系数表征及数值模拟[J].弹道学报,2018,(04):71.[doi:10.12115/j.issn.1004-499X(2018)04-012]
 LI Shuli,YANG Guolai.Representation of Friction Coefficient and Numerical Simulation forBarrel-Projectile Under the Condition of High Pressure and High Speed[J].Journal Of Ballistics,2018,(04):71.[doi:10.12115/j.issn.1004-499X(2018)04-012]
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高压高速工况下弹炮间摩擦系数表征及数值模拟()
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《弹道学报》[ISSN:1004-499x/CN:32-1343/TJ]

卷:
期数:
2018年04期
页码:
71
栏目:
出版日期:
2018-12-31

文章信息/Info

Title:
Representation of Friction Coefficient and Numerical Simulation forBarrel-Projectile Under the Condition of High Pressure and High Speed
文章编号:
1004-499X(2018)04-0071-06
作者:
李树立杨国来
南京理工大学 机械工程学院,江苏 南京 210094
Author(s):
LI ShuliYANG Guolai
School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China
关键词:
内弹道 身管 弹丸 弹炮耦合 摩擦副 动压理论
Keywords:
interior ballistics barrel projectile missle-gun coupling friction pair dynamic pressure theory
分类号:
TJ399
DOI:
10.12115/j.issn.1004-499X(2018)04-012
文献标志码:
A
摘要:
为了准确表征弹炮耦合过程中身管弹丸摩擦副的摩擦系数,采用动压润滑理论,综合考虑身管弹丸摩擦副高压、高速的极端工况,建立了动压润滑摩擦模型,推导出了相应的摩擦系数计算公式。通过有限元方法模拟了弹炮耦合过程中身管弹丸摩擦副摩擦系数的转变过程。结果表明:摩擦系数与接触压力和相对运动速度成反比,当接触压力和相对运动速度乘积达到20 000 MPa·m/s以后,摩擦系数基本趋于稳定值0.02。与恒定摩擦系数下弹丸的运动姿态进行了对比,得到了更为平稳的弹丸运动姿态,为弹炮一体化设计分析提供了一种技术途径。
Abstract:
In order to accurately characterize the friction coefficient of the barrel-projectile friction pair(BPFP)during the coupling process of projectile-gun,the dynamic pressure lubrication theory was adopted,and the dynamic conditions of high pressure and high speed of BPFP were comprehensively considered. The dynamic lubrication friction model was established,and the corresponding calculation formula of friction coefficient was derived. The finite element method was used to simulate the transformation process of the friction coefficient of BPFP during the coupling process of projectile-gun. The results show that the friction coefficient is inversely proportional to the contact pressure and the relative motion speed. When the product of the contact pressure and the relative motion velocity reaches 20 000 MPa·m/s,the friction coefficient basically tends to be a stable value of 0.02. Compared with the motion attitude of projectile under constant friction coefficient,a more stable projectile attitude was obtained. The study provides a technical approach for the integrated design analysis of projectile-gun.

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备注/Memo

备注/Memo:
收稿日期:2018-04-23基金项目:国家自然科学基金项目(11572158)作者简介:李树立(1994-),男,硕士研究生,研究方向为摩擦磨损。E-mail:1768916087@qq.com。
更新日期/Last Update: 2018-12-30