Influence of explosive density on small scale internal blast experiments |
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Authors: | NING Peng-fei and TANG De-gao |
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Institution: | [1]School of Command Basic Education, National University of Defense Technology, Changsha 410073, P. R. China [2]Engineering Institute of Engineers Corps, PLA University of Science & Technology, Nanjing 210007, P. R. China |
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Abstract: | To study the internal blast load, a lot of small scale internal blast experiments have been conducted. For those experiments, the influence of explosive density generally was not taken into account while it was simple to have slight density differences in application. To analyze the influence of explosive density on small scale internal blast experiments, the finite element code LS-DYNA was employed and the numerical model was established. The numerical model was validated against published experimental data and the result shows a good agreement. We found that that both the peak overpressure and impulse increase with the density of charge. Empirical equations were fitted using the calculation results to evaluate the influence of explosive density on the peak overpressures and impulses. |
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Keywords: | hydrodynamic calculation internal blast blast load empirical equation |
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