한국군사과학기술학회지 (Journal of the Korea Institute of Military Science and Technology)
- 제8권3호
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- Pages.73-82
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- 2005
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- 1598-9127(pISSN)
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- 2636-0640(eISSN)
충격응답 스펙트럼이 나타나는 시간들의 차이가 짧은 충격파형의 합성방법 및 충격응답 내역을 구하는 디지털 필터
Shock Waveform Synthesis Methods for Shock Response Spectrum over Short Time Interval, Digital Filter for Obtaining Shock Response History and Applications Thereof
초록
This paper describes shock waveform synthesis methods for a shock response spectnlm over a short time interval with which intereference between parts within a test item is increased to perform a sufficient shock test for damage or malfunction which may be caused by the interference between parts, and a digital filter for obtaining a shock response history required for the shock waveform synthesis and a digital inverse filter for restoration by inversely using the digital filter. The time at which the maximax value occurs in the response history is detected in order to establish a delay time which is one of the parameters in the wavelet, on the condition that the natural frequency of SDOF system with a Q (quality factor) of 10 equals to the wavelet frequency of the zero delay wavelet input. A shock response spectrum over a short time interval and an abrupt change in the acceleration for an instant are illustrated as features of the synthesized waveform.
키워드