Numerical Simulation Of Explosion In Soil With Emphasis On The Effect Of Depth Of Buried And The Mass Of Explosive

In this article, numerical simulation of the explosion of explosive in the dry sand is carried out by taking advantage of mechanical software Autodyn and Ls-Dyna, study contains three factors :(1)By calculating the explosion of TNT explosive both in the infinite soil and finite soil, and contrasting the results with experience results, the conclusion is obtained: the SOIL_AND_FOAM model in the Ls-Dyna is more effective than the SAND model in the Autodyn, for simulating the dynamic issue as explosion.(2)Using the Ls-Dyna, this article simulates the explosion experiments carried out by DRES in Canada, numerical results agree well with the experiment results. This shows on the basis of right modeling way and model parameter, numerical simulation could reflect the explosion phenomenon correctly.(3)Taking the C-4 explosive as research object, by the numerical simulation software, this article gets the rule of the explosion within the depth of 0-50cm. The research shows: there is a best depth of explosive to make the strongest effect of the explosion in the soil;in the same depth, when the mass of explosive increases, the radius of crater increases, and closes to a constant.