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In this paper, commercial software Autodyn and Ls-Dyna explosion on the specific circumstances of the soil were studied, study includes the following three aspects: ( 1 ) by calculating the infinite soil medium and the near-surface soil medium explosive situation , and the results and empirical relationships comparison, Ls-Dyna software SOIL_AND_FOAM constitutive model is better than Autodyn software SAND model effective, more suitable for simulation of soil medium explosion strong dynamic problems . ( 2 ) to Ls-Dyna as the main tool , the specific calculation of the Canadian DRES agencies soil test explosions , the results show that the simulation results and experimental results in qualitative or semi-quantitative agreement . This shows a reasonable model parameters modeling methods and materials under the conditions , numerical simulation results can reflect the explosion into the pit unearthed in macroscopic phenomena , reflecting the numerical simulation accuracy. ( 3 ) to C-4 explosives for the study, using numerical calculations, detailed calculation of the depth of 0 ~ 50cm range , 100gC-4 explosives explode into a pit rule , the results show that there is an optimum depth , the depth of the explosion , the volume of the largest crater ; in depth in certain circumstances , with the explosive equivalent crater radius increases , and gradually tends to constant values.
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