In order to study anti-perforation mechanisms of warship topside interior-mounted composite armor(CA) and estimate the residual velocities of missile warheads after perforating CA to further design interior protective structures, low-velocity ballistic experiments were carried out for the interior-mounted CA, which was simulated by a steel plate at the front and a composite laminate at the back. Failure modes of the combined targets were analyzed. On the basis of the experimental results, a theoretical equation was developed to predict residual velocities of ball projectile perforating combined targets. Results show that front steel-plates of the combined targets are mainly destroyed by shear plugging,and the failure modes of composite backing armors are mainly fiber tensile-rupture. The theoretical predictions are in good agreement with experimental results in terms of residual velocities of projectiles.%为研究舰船舷侧内设复合装甲结构的抗穿甲破坏机理,预测战斗部穿透内设复合装甲结构后的剩余速度,以进一步对内部防护结构进行设计,采用均质钢板后置复合材料板模拟舰船舷侧内设复合装甲结构,结合低速弹道冲击试验,分析了组合结构靶板的破坏模式.在此基础上,根据靶板的破坏模式,得到了球头弹丸穿透组合结构靶板的剩余速度理论预测公式.结果表明,组合靶板中前置钢板的破坏模式主要为剪切冲塞破坏,而后置复合装甲板的破坏模式为纤维的拉伸断裂;理论预测剩余速度值与试验结果吻合较好.
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