Finite Element Analysis of Bullet Penetration Circular Sandwich Plate

Abstract:

A nonlinear dynamic finite element method based on ANSYS/LS-DYNA is used to simulate the physical process of a bullet penetrating circular sandwich plate at a speed of about 400 m/s. In the simulation, Lagrange algorithm, Johnson-Cook and Crushable-foam constitutive model are choosed. Energy time history curve, impact force time history curve, Von-Mises stress nephogram and displacement nephogram are obtained. At the same time, stress time history curve of the maximum stress element and displacement time history curve of the maximum displacement node are obtained. Compared with the non-sandwich plate, it is found that the use of sandwich plate can reduce the total mass, inner plate stress and displacement, and can protect inner plate well.

• Periodical: Applied Mechanics and Materials (Volume 364)
• Pages: 149-153
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.364.149
• Online since: August 2013
• Authors: Pei Long Zhao, Fang Zhen Song, Nai Jian Chen, Bo Song
• Keywords: Bullet, Finite Element, Foamed Aluminum, LS-DYNA, Penetration, Sandwich Plate

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DOI: 10.1016/0013-7944(85)90052-9

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