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Study on Mechanisms of Laterally Confined Ceramic Composite Target Against Projectiles

Author: MaZhenYu
Tutor: ZengShouYi
School: National University of Defense Science and Technology
Course: Disaster Prevention and Reduction Engineering and Protective Engineering
Keywords: Armor protection Ceramic Composite Target Lateral restraint Penetrators The ballistic resistance mechanism and performance
CLC: TJ01
Type: Master's thesis
Year: 2007
Downloads: 109
Quote: 1
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Abstract

In this paper, the combination of ballistic tests and numerical simulation methods , research the analog long rod projectile and 30mm caliber semi - armor-piercing shells ( referred to 30 bombs ) penetration lateral restraint Ceramic Composite Target problem , focusing on the ceramic composite target lateral restraint board anti- bomb mechanism and bullet-proof performance . This paper work and innovative achievements are as follows : (1) Ceramic Composite Target test of long rod projectile penetrating into the numerical simulation of Ceramic Composite Target against long rod projectile into the mechanism of lateral restraint . Studies have shown that the lateral restraint against long rod projectile into the mechanism of Ceramic Composite Target : lateral restraint is applied to the ceramic panel to limit the radial movement of the ceramic materials , ceramic panel in the penetration process large radial pressure strengthen the role of the projectile and target to improve the anti-penetration capability of the panel . ( 2) research the lateral restraint plate thickness and diameter of ceramic panel performance target plate against long rod projectile into the impact , the better the target plate configuration . This study of long rod projectile the incident speed range (1000m / s ~ 1400m / s ) , the need to impose lateral restraint panel diameter range : panel diameter projectile diameter ratio of less than 13; the ceramic panel diameter and lateral the optimum matching of the thickness of the restraint plate is: the panel diameter of the projectile diameter ratio is 9 to 12 , the lateral constraint plate a thickness of approximately 10 mm . (3) the constraints Ceramic Composite Target ballistic tests and numerical simulation of three - dimensional vertical penetration of 30 bombs . The results show that the penetration process can be divided into three stages: The first stage is the the ceramic cone crusher formation stage , the second stage of the projectile penetrating the panel stage , third stage of the missile body directly with the role of the metal back stage . ( 4) a the lateral restraint Ceramic Composite Armour 30 bombs reasonable match . Lateral restraint Ceramic Composite Target Unlike no lateral restraint the ceramic target plate anti - 30 projectile into the mechanism is mainly reflected in the first and second stages : the former constraints lateral movement of the ceramic material , increasing the ceramic panel lateral compressive stress, and to delay the ceramic cracking , increasing the loss of quality of the elastomer , increasing the backplane plastic deformation of the energy dissipation , thereby improving the target plate ballistic capability . In this paper the target plate configuration , the lateral restraint board thickness is about 8mm; applied lateral restraint the panel side length of the projectile diameter ratio is less than 3.67 , the ceramic panel can effectively improve the ballistic resistance of the target plate performance .

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