Analytic model to determine the unknown parameters of JWL++ rate equation

JWL++ 반응속도식의 미정상수 결정을 위한 화약의 이론적 모델

  • 김보훈 (서울대학교 기계항공공학부) ;
  • 여재익 (서울대학교 기계항공공학부)
  • Published : 2012.04.13

Abstract

The analytical model determining the unknown parameters of reaction rate equation which is necessary to simulate the combustion phenomena of energetic materials is proposed. The relationship between detonation velocity and size effect of energetic materials is derived from simplified JWL++ model. Theoretical model is used to investigate the combustion characteristics of certain energetic materials before running Hydrocode by pre-determination of unknown parameter, b. When b=0.8, the behavior of HANFO gunpowder is in the form of concave-up and ANFO explosives has the concave-down form in case of b=1.5. The analytical model provides efficient and highly accurate results rather than previous method which simulated the unconfined-rate-stick via the numerical means.

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