Simulation Study of the Terminal Flight Parameters on the Damage of a Steel Plate
J.-Y. Yi1, R.-J. Hao1, H.-J. Chen2, S.-M. Guan1, S.-Q. Che3
1College of Electromechanical Engineering, North University of China, Taiyuan, China
2Chongqing Hongyu Precision Industry Group Co, Ltd, Chongqing, China
3Jinxi Industries Group Corporation Ltd, Taiyuan China
Keywords: impact velocity, impact angle, destruction mode, fixed steel target.
Abstract
To study the damage effect of cylindrical charges on steel plates at different impact velocities and angles, a numerical simulation study on the damage effect of cylindrical charges on a steel target plate is carried out at impact velocities of 0-800 m/s and impact angles of 0-90 °C without changing the vertical distance between the center of the cylindrical charge and target plate. It is demonstrated that four main damage modes of the steel plate exist in this case: plastic deformation, boundary tearing, tear at the center of the steel plate, and petal-shaped break. At a zero impact velocity, the damage pattern of the target plate is not affected by the impact angle, and it is plastic deformed. With an increase in the impact angle, the maximum deflection of the steel plate decreases first and then increases; with an increase in the impact velocity of the charge, at the impact velocities of 200 and 400m/s and the impact angles greater than 75oC, the damage mode of the steel plate is no longer plastic deformation, but boundary tear or central petal damage. With an increase in the impact velocity, the energy acting on the plate increases; hence, the energy density affecting the plate also increases. As a result, the breaking effect of the charge on the plate always increases with increasing impact velocity.
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