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• W2938854312 abstract "With the development of two-stage munitions (a precursor shaped charge (SC) and a following kinetic energy projectile) to attack the hard concrete targets, as well as the increasing applications of ultra-high performance concrete (UHPC) in both civil and military protective structures, a comparative study on the impact performance of SC formed jet on UHPC target is performed experimentally and numerically at present. Firstly, a series of jet penetration/perforation test on the UHPC, 45# steel and UHPC/45# steel composite targets are conducted. By assessing the penetration depth and borehole (crater and tunnel) diameter, the influences of target material and configuration as well as the standoff distance of SC on the impact performance of jet are experimentally discussed. Then, by adopting the 2D multi-material Arbitrary Lagrange-Euler (ALE) algorithm, Fluid-Structure Interaction (FSI) method and erosion algorithm implemented in the finite element code LS-DYNA, the formation and impact performance of jet in the present test are well reproduced. Finally, based on the validated numerical algorithms, constitutive models and the corresponding parameters, the influences of target material (UHPC, NSC and 45# steel), standoff distance, target configuration (stacked and spaced) and weight efficiency on the impact performance of jet are further discussed. The derived conclusions could provide helpful references for evaluating the ballistic performance of jet and designing the protective structures." @default.
• W2938854312 created "2019-04-25" @default.
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• W2938854312 date "2019-08-01" @default.
• W2938854312 modified "2023-10-18" @default.
• W2938854312 title "A comparative study for the impact performance of shaped charge JET on UHPC targets" @default.
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• W2938854312 doi "https://doi.org/10.1016/j.dt.2019.04.005" @default.
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