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Chinese Journal of High Pressure Physics  > 2014  >  28(4): 435-442.
LIU Yi-Ru, DUAN Zhuo-Ping, OU Zhuo-Cheng, HUANG Feng-Lei. Theoretical Approach of Determining Expansion Law of Cylinder under the Detonation Driving of Multi-Component Explosive[J]. Chinese Journal of High Pressure Physics, 2014, 28(4): 435-442. doi: 10.11858/gywlxb.2014.04.008
Citation: LIU Yi-Ru, DUAN Zhuo-Ping, OU Zhuo-Cheng, HUANG Feng-Lei. Theoretical Approach of Determining Expansion Law of Cylinder under the Detonation Driving of Multi-Component Explosive[J]. Chinese Journal of High Pressure Physics, 2014, 28(4): 435-442. doi: 10.11858/gywlxb.2014.04.008
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Theoretical Approach of Determining Expansion Law of Cylinder under the Detonation Driving of Multi-Component Explosive

doi: 10.11858/gywlxb.2014.04.008

  • State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

  • Received Date: 15 Sep 2012
  • Rev Recd Date: 12 Nov 2012
    Abstract
  • In order to provide basic data for quickly predicting JWL (Jones-Wilkins-Lee) parameters of multi-component explosive with any component ratio, this paper presents a theoretical approach for quickly determining the expansion characteristics of cylinder driven by detonation products of multi-component explosive in a cylinder test.Namely, based on the JWL parameters of each component in multi-component explosive, according to energy conservation principle and using Gurney model, the expansion displacement-time curve of cylinder under the detonation driving of multi-component explosive can be obtained.Meanwhile, utilizing energy conservation principle and the relationship between detonation velocity, detonation pressure and detonation heat from constant γ equation of state in classical detonation theory, this paper also presents a theoretical approach for determining the detonation velocity and detonation pressure of multi-component explosive with any component ratio.Using this method, the cylinder expansion characteristics, detonation velocity and detonation pressure of a PBXC03 and a PBXC10 multi-component explosive were calculated, respectively.It is found that the calculated results are in good agreement with previous experimental results, which verifies the feasibility of the theoretical approach.

     

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