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《Acta Armamentarii》 2018-05
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Investigation on the Damage Mechanism of Blunt Projectile against Thin Plate

XU Wei;HOU Hai-liang;ZHU Xi;CHEN Chang-hai;LI Mao;Department of Naval Architecture Engineering,Naval University of Engineering;  
The ballistic tests were carried out to explore the failure modes of target impacted by the blunt projectile. The deformation of of projectiles and the damage modes of targets at different initial velocities were analyzed. The interaction between projectile and target is simulated using ANSYS/LS-DYNA for analyses of penetration mechanism. The fitting curve of final target deformation in the dishing area was acquired according to the test results. The plastic deformation energies of projectile and target are analyzed,and a simplified analytical model for residual velocity is proposed based on principle of conservation of energy. It is shown that mushrooming deformation is observed in the projectile. The target material fails due to sheering and stretching,and accordingly the failure modes of targets are global dishing deformation with local sheering and tensile failures. The residual velocity drawn from the formula proposed in this paper is in good agreement with the test data,which testifies the applicability of the proposed model.
【Fund】: 国家自然科学基金项目(51409253、51679246)
【CateGory Index】: TJ410
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