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dc.contributor.authorSong, Arnold J.-
dc.contributor.authorWest, Brendan A.-
dc.contributor.authorTaylor, Oliver-Denzil S.-
dc.contributor.authorO’Connor, Devin T.-
dc.contributor.authorParno, Matthew D.-
dc.contributor.authorHodgdon, Taylor S.-
dc.contributor.authorCole, David M.-
dc.contributor.authorClausen, Jay L.-
dc.description.abstractExisting models for predicting the penetration depth of munitions and explosives of concern are inaccurate and insufficient from a user (range manager, U.S. Army Corps of Engineers project manager, or environmental consultant) operability perspective for current needs. We attribute poor model performance to (1) a heavy dependence on empirically derived parameterizations poorly linked to the physical properties of the target material or (2) physics-based models that inadequately capture the salient mechanical processes, especially in the first meter of penetration. Consequently, we have developed a micromechanical-based model using a hybrid discrete element model (DEM) / finite element model (FEM) approach capable of a detailed treatment of near-surface soil properties. To examine the effects of varying levels of moisture on the dynamic behavior of a soil, we fabricated a small-scale triaxial shear test to inform the development and calibration of the DEM contact model. We conducted projectile-drop tests into sand with a scale version of a 57 mm projectile and measured projectile penetration to compare with model results.en_US
dc.description.sponsorshipStrategic Environmental Research and Development Program (U.S.)en_US
dc.publisherCold Regions Research and Engineering Laboratory (U.S.)en_US
dc.publisherEngineer Research and Development Center (U.S.)en_US
dc.subjectDiscrete element methoden_US
dc.subjectFinite element methoden_US
dc.subjectNumerical analysisen_US
dc.subjectPenetration mechanicsen_US
dc.titleMunition penetration-depth prediction : SERDP SEED Project MR-2629en_US
Appears in Collections:Technical Report

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