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Characterizations of gun barrel vibrations of during firing based on shock response analysis and short-time Fourier transform

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Abstract

The behavior of shock vibration for a medium caliber gun barrel was experimentally investigated and then, numerical modal analysis, a signal processing technique as well shock response analysis were carried out en route to the detailed analyses. This approach was initiated by identifying mode frequencies from the numerical model and thus the frequencies were clarified using the periodogram together with the spectrogram based on the time frequency analysis. A shock response analysis was employed to draw more physical interpretations regarding the barrel behaviors due to firing shock. In this paper, therefore, the overall process of shock vibration analysis was demonstrated for analyzing the shock behavior of the gun barrel.

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Authors and Affiliations

  1. Agency for Defense Development, Daejon, 305-600, Korea

    Hak In Gimm, Ki Up Cha & Chang Ki Cho

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  1. Hak In Gimm
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  2. Ki Up Cha
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  3. Chang Ki Cho
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Correspondence to Hak In Gimm.

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Recommended by Editor Yeon June Kang.

Hakin In Gimm received his B.S. degree in the Department of Mechanical Engineering in Dankook University in 1982. He received the M.S. degree in the Department of Mechanical Engineering and Applied Mechanics at the University of Michigan and the Ph.D from the Department of Aerospace and Mechanical Engineering at the University of Arizona in 1989 and 1995, respectively. He is currently a principal researcher at the Agency for Defense Development, Korea. His research works include the shock analysis of structural and dynamic systems.

Ki Up Cha received his B.Sc. and M.S. degrees in the Department of Mechanical Engineering from Inha University, in 1984 and 1987, respectively. He is currently a principal researcher at the Agency for Defense Development. His current research interests include impulse and shock mitigation, application of multi-objective and particle swarm optimization.

Chang Ki Cho received his B.Sc. in Mechanical Engineering from Ajou University, Korea, in 1980, and his M.S. and Ph.D in Mechanical Engineering from Yonsei University, Korea, in 1991 and 1998, respectively. He is currently a principal researcher in the Agency for Defense Development. His research interests include multi-body modeling and vibration analysis for gun system, and impact dynamic analysis of structures.

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Gimm, H.I., Cha, K.U. & Cho, C.K. Characterizations of gun barrel vibrations of during firing based on shock response analysis and short-time Fourier transform. J Mech Sci Technol 26, 1463–1470 (2012). https://doi.org/10.1007/s12206-012-0335-5

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  • DOI: https://doi.org/10.1007/s12206-012-0335-5

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