吉林大学学报(工学版) ›› 2013, Vol. 43 ›› Issue (04): 983-990.doi: 10.7964/jdxbgxb201304023

• 论文 • 上一篇    下一篇

气动灭火炮弹体橡胶圈仿生凹坑表面减阻特性

谷云庆1,2, 赵刚1, 刘浩1, 王彦明3, 李照远1, 刘文博1, 赵健英1, 李芳1   

  1. 1. 哈尔滨工程大学 机电工程学院,哈尔滨 150001;
    2. 昆明理工大学 机电工程学院,昆明 650500;
    3. 齐重数控装备股份有限公司,黑龙江 齐齐哈尔 161005
  • 收稿日期:2012-04-13 出版日期:2013-07-01 发布日期:2013-07-01
  • 通讯作者: 赵刚(1957-),男,教授,博士生导师.研究方向:仿生减阻,智能制造系统.E-mail:zhaoheu@gmail.com E-mail:zhaoheu@gmail.com
  • 作者简介:谷云庆(1982-),男,博士研究生.研究方向:仿生减阻.E-mail:guyunqing@hrbeu.edu.cn
  • 基金资助:

    国家自然科学基金项目(51275102);中央高校基本科研业务费专项项目(HEUCF110702);哈尔滨市科技创新人才研究专项项目(159070220011).

Characteristics of drag reduction of bionic dimpled surface of shell rubber ring of aerodynamic extinguishing cannon

GU Yun-qing1,2, ZHAO Gang1, LIU Hao1, WANG Yan-ming3, LI Zhao-yuan1, LIU Wen-bo1, ZHAO Jian-ying1, LI Fang1   

  1. 1. College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China;
    2. College of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500,China;
    3. Qiqihar Heavy CNC Equipment Co., Ltd., Qiqihar 161005, China
  • Received:2012-04-13 Online:2013-07-01 Published:2013-07-01

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摘要：

针对气动灭火炮炮弹发射过程中弹体橡胶密封圈与炮管之间摩擦阻力大的问题,将仿生凹坑表面减阻技术应用于弹体橡胶密封圈上。建立气动灭火炮橡胶密封圈仿生凹坑减阻运动模型,采用数值模拟方法,研究弹体橡胶密封圈仿生凹坑特征直径及弹体速度对橡胶密封圈与炮管之间摩擦阻力的影响。结果表明:在相同的弹体速度下,当灭火炮弹体橡胶密封圈仿生凹坑特征直径为2 mm时,减阻效果最佳,凹坑特征直径为4 mm时,减阻效果最差;最大减阻率为17.191%,最小减阻率为3.158%。仿生凹坑中存储的润滑油在弹体运动时,润滑油产生拖拽泼洒而溢流到炮管内壁,对炮管内壁和橡胶密封圈起到润滑作用,达到减小摩擦阻力以及提高炮弹发射速度的目的。

关键词: 工程仿生学, 气动灭火炮, 橡胶密封圈, 凹坑表面, 减阻, 数值模拟

Abstract:

To reduce the frictional resistance between the barrel and the rubber seal ring of shell body during the launching process of aerodynamic extinguishing cannon, a bionic drag reduction technology of dimpled surface was applied to the rubber ring. The motion model was established for the dimpled drag reduction surface of the rubber seal ring. The effects of the characteristic diameter of bionic dimples on the rubber seal ring and the shell speed on the frictional resistance between barrel and shell body were investigated by numerical simulation. Results show that, at the same shell speed, with dimple characteristic diameter of 2 mm, the highest drag reduction effect, 17.191%, was obtained; with dimple characteristic diameter of 4 mm, the lowest drag reduction effect, 3.158, was obtained. It is revealed that the mechanism of the drag reduction is that, during moving inside the barrel, the lubricant stored in the dimples on the seal ring of shell spills over to lubricate the barrel wall and seal ring, which reduces the frictional resistance and thus increases the launching speed.

Key words: engineering bionics, aerodynamic extinguishing cannon, rubber seal ring, dimpled surface, drag reduction, numerical simulation

中图分类号: 

  • TB17

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