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<p>The cylinder expansion (CYLEX) test is commonly used to describe the adiabatic expansion of the detonation products and calibrate the equation of state (EOS) of detonation products. A CYLEX test method analogous to the T-20 (pre-set position and record the time of arrival) methodology was developed utilizing a set of probes with radial displacement difference and a high-speed pulse timer to record the radial expansion displacement of the cylinder wall. Two CYLEX tests for Dihydroxylammonium 5,5’-bitetrazole-1,1’-dioxide (TKX-50)-based explosives and two for 2, 4, 6-trinitrotoluene (TNT) were conducted using the CYLEX test method developed, and further Jones-Wilkins-Lee (JWL) EOS parameters of detonation products were determined using the BP neural network and genetic algorithm (BP-GA) program. Besides, the JWL EOS parameters obtained were numerically validated by performing the simulations of the CYLEX test, where the simulation results were consistent with the experimental data.</p>

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Optimizing program calibration of JWL parameters of detonation products for TKX-50-based explosives from CYLEX tests

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年11月18日

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  • Hao Cui,
  • Junan Wu,
  • Yuxin Xu,
  • Pu Song,
  • Rui Guo

摘要

The cylinder expansion (CYLEX) test is commonly used to describe the adiabatic expansion of the detonation products and calibrate the equation of state (EOS) of detonation products. A CYLEX test method analogous to the T-20 (pre-set position and record the time of arrival) methodology was developed utilizing a set of probes with radial displacement difference and a high-speed pulse timer to record the radial expansion displacement of the cylinder wall. Two CYLEX tests for Dihydroxylammonium 5,5’-bitetrazole-1,1’-dioxide (TKX-50)-based explosives and two for 2, 4, 6-trinitrotoluene (TNT) were conducted using the CYLEX test method developed, and further Jones-Wilkins-Lee (JWL) EOS parameters of detonation products were determined using the BP neural network and genetic algorithm (BP-GA) program. Besides, the JWL EOS parameters obtained were numerically validated by performing the simulations of the CYLEX test, where the simulation results were consistent with the experimental data.