Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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The Parametric Study of the Design Variables on the SRS of Pyroshock Resonant Bar

파이로 충격 모사 시험 장치 주요 매개변수에 따른 SRS 분석

  • Jeon, Hyeonkyu (Department of Aerospace Engineering, Chungnam National University) ;
  • Kim, Munguk (Department of Aerospace Engineering, Chungnam National University) ;
  • Kim, Minsung (Department of Aerospace Engineering, Chungnam National University) ;
  • Kwon, Yeongmin (Department of Aerospace Engineering, Chungnam National University) ;
  • Yu, Yejin (Department of Aerospace Engineering, Chungnam National University) ;
  • Kim, In-Gul (Department of Aerospace Engineering, Chungnam National University)
  • 전현규 (충남대학교 항공우주공학과) ;
  • 김문국 (충남대학교 항공우주공학과) ;
  • 김민성 (충남대학교 항공우주공학과) ;
  • 권영민 (충남대학교 항공우주공학과) ;
  • 유예진 (충남대학교 항공우주공학과) ;
  • 김인걸 (충남대학교 항공우주공학과)
  • Received : 2018.04.30
  • Accepted : 2018.07.27
  • Published : 2018.08.05
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Abstract

The pyroshocks can cause failure of electronics devices and structures. Metal-metal impact methods are utilized to simulate mechanical pyroshock, and to adjust the knee frquency of the SRS(Shock Response Spectrum) through resonant structures. In this paper, the major parameters of pyroshock simulation device which affect the SRS were examined. Through the Hertzian contact law and the modal characteristics of the resonant bar, it was found that the SRS is affected by the length and mass of a bar and various impact conditions such as velocity and mass of impactor. The characteristics due to the geometric parameters of a resonant bar was analyzed by performing FEA and also the resonant bar was designed and fabricated. Through the pyroshock simulation test, the characteristics of SRS due to the variation of impact parameters were examined.

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References

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