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파이로 충격 모사 시험 장치 주요 매개변수에 따른 SRS 분석
전현규,김문국,김민성,권영민,유예진,김인걸,Jeon, Hyeonkyu,Kim, Munguk,Kim, Minsung,Kwon, Yeongmin,Yu, Yejin,Kim, In-Gul 한국군사과학기술학회 2018 한국군사과학기술학회지 Vol.21 No.4
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.