Abstract
Numerical parametric simulation of penetration of aluminum plate by steel bullet is done. A three-dimensional model is constructed, the deformation of the plate is considered to be elastic-plastic. Further is modeling a projectile impacting on a ceramic layer backed by a metal plate. Is studied the two-layer metal-ceramic target with a different ratio of the thickness of the ceramic and steel. Is constructed a two-dimensional axisymmetric finite element Lagrangian model. The Johnson-Holmquist model of brittle fracture is used. Is simulated real boundary conditions of the system during penetration. Finite element models are prepared in Ansys, and key file is generated in the LS-DYNA. To locate the damaged section on impact is using thickening finite element mesh. To study the main stages of the bullets penetration into metal and metal-ceramic targets are used models, which provide visibility penetration.The main stages of bullet penetration and damage to a target are studied by analysis of plastic deformation and bullet velocity versus time. Also is studied absorption energy by the metal and metal-ceramic target. A comparison of the results of finite element solutions ANSYS / LS-DYNA with data reported in the literature is done.
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Schedule a callMore From: Bulletin of the National Technical University «KhPI» Series: Dynamics and Strength of Machines
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