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Characteristics of seal shell body’s rubber ring with bionic dimpled surfaces of aerodynamic extinguishing cannon

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Abstract

To solve the problem of sealing between the barrel and the rubber ring of shell body during an launching process of aerodynamic extinguishing cannon, a rubber sealing model with bionic dimpled characteristics was established based on the theory of bionic dimpled drag reduction and the principle of rubber sealing. In condition that the bionic dimpled characteristic diameters were 1, 2, 3, 4, and 5 mm, respectively, by numerical simulation, the influence of the installing compression of the rubber sealing ring on its surface stress and deformation was analyzed, and sealing performance of the rubber ring with different diameters of bionic dimpled was studied. The results show that the deformation of rubber ring appears prominent nonlinear characteristics when compression is increased from 1.5 mm to 2.5 mm. When the compression is 2.5 mm, the equivalent compression stress on the sealing areas of both sides of the rubber seal is greater than the working pressure of aerodynamic extinguishing cannon, which could meet the sealing requirement and would not cause leakage. So the rubber sealing ring with bionic dimpled surface possesses a good sealing characteristic and has no negative effect on the sealing of shell body; When the compression is 2.5 mm, the larger equivalent stress on the edge of sealing ring and the more even stress distribution in the high pressure area are generated due to the smaller compressive stress on the bionic dimple areas, which lays a foundation for the drag reduction characteristics of the shell body’s rubber ring with bionic dimpled surface.

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Authors and Affiliations

  1. College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin, 150001, China

    Yun-qing Gu  (谷云庆), Gang Zhao  (赵刚), Hao Liu  (刘浩), Jin-xing Zheng  (郑金兴), Jing Ru  (汝晶), Ming-ming Liu  (刘明明) & A. R. Chatto

  2. College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China

    Yun-qing Gu  (谷云庆)

  3. School of Science for Design, Joseph Fourier University, Grenoble, 38031, France

    Cheng-gang Wang  (王成刚)

Authors
  1. Yun-qing Gu  (谷云庆)
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  2. Gang Zhao  (赵刚)
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  3. Hao Liu  (刘浩)
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  4. Jin-xing Zheng  (郑金兴)
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  5. Jing Ru  (汝晶)
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  6. Ming-ming Liu  (刘明明)
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  8. Cheng-gang Wang  (王成刚)
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Corresponding author

Correspondence to Gang Zhao  (赵刚).

Additional information

Foundation item: Project(51275102) supported by the National Natural Science Foundation of China; Project(159070220011) supported by the Science and Technology Innovative Research Programs Foundation of Harbin city, China; Project(HEUCF110702) supported by the Fundamental Research Funds for the Central Universities of China

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Gu, Yq., Zhao, G., Liu, H. et al. Characteristics of seal shell body’s rubber ring with bionic dimpled surfaces of aerodynamic extinguishing cannon. J. Cent. South Univ. 20, 3065–3076 (2013). https://doi.org/10.1007/s11771-013-1830-2

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  • DOI: https://doi.org/10.1007/s11771-013-1830-2

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