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- W2350341705 abstract "A numerical calculation model for simulating the TNT explosion was established by using LS-DYNA finite element program and the numerical calculation of explosive shock waves for air explosion was carried out.Through comparative analysis of the numerical results with empirical formula and experimental data,the credibility of the calculation model and parameter selection was verified.Based on the numerical calculation results,the effects of change in material parameters of explosive,TNT dosage,unit mesh density,modeling ways,air domain shapes and shapes of explosive etc.on the explosive shock wave overpressure were analyzed.The results show that compared with the experimental results,the numerical calculation results can be used as the lower limit of the explosive shock waves overpressure,whereas the overpressures from Henrych formula,Sadovskyi formula and formula in GB6722-2003 are the median and lower value.The effects of parameter selection of materials,unit mesh density and explosive shapes on the numerical simulation results are related to the scaled distance,and the effects can not be ignored when the scaled distance is less than 2.0.The shock wave overpressure slightly increases with the increase of the TNT dosage.But the influences of modeling ways and air domain shapes on the calculated results can be neglected." @default.
- W2350341705 created "2016-06-24" @default.
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- W2350341705 date "2015-01-01" @default.
- W2350341705 modified "2023-09-24" @default.
- W2350341705 title "Numerical Calculation and Influence Parameters for TNT Explosion" @default.
- W2350341705 hasPublicationYear "2015" @default.
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