凝聚态炸药冲击起爆判据的分析与评价

Analysis and Assessment on Shock Initiation Criterion for Condensed Explosives

  • 摘要: 本文综述了5种凝聚态炸药的冲击起爆判据,对每种判据进行分析,其中Pnτ判据适用于一维短脉冲冲击起爆的判定,James判据及其改进形式从微观角度将输入炸药的冲击能量转化为能量密度、质点比动能、输入功率和Jmax等物理量,能够反映冲击起爆的动态过程,在研究炸药的冲击起爆阈值和评估冲击起爆的可靠性等方面具有广阔的应用前景.

     

    Abstract: Five shock initiation criterions for condensed explosives were introduced from literatures. The critical energy criterion Pnτ is more suitable topredict shock initiation of explosives undergoing one -dimensional short duration impact. James criterion and its modifications incorporate several variables, such as energy fluence, specific Kinetic energy, power flux, and Jmax-to interpret input shock energy at the microscale level. The series of James criterion could describe dynamic process of shock initiation and have broad prospects in the study of shock initiation threshold of explosives and assessment of the reliability of shock initiation.

     

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