Modeling and Analysis of a 3-D Asymmetric Mine-Soil-Hull Floor Interaction Problems with Mine Buried in Dry and Wet Sand

摘要

An above-ground 2.44 m x 2.44 m x 20 cm rolled homogeneous armor (RHA) plate with a total mass of 9000 kg located asymmetrically at a fixed horizontal 61 cm offset and a vertical 46 cm stand-off above a shallow-buried mine with an equivalent charge weight of 9.05 kg TNT and 15 cm depth of overburden in dry and wet sand has been modeled in 3-D using the CTH hydrodynamic code. The purpose is to compare the loading and response of the anvil plate due to detonation of a mine buried in dry and wet sand using a 3-D asymmetric model of a mine-soil-hull floor interaction problem. The model allows parametric study of complex explosive-soil-structure interaction effects due to variation of explosive types and plate dimensions, standoff, types of soil and height of soil overburden and computes momentum loading on the ballistic pendulum anvil plate due to various off-axis locations of the mine in dry and wet soils relative to the hull floor plate located on the underside of an armored vehicle.