摘要
为了探索新型抗钻地武器防护技术,提出了一种由偏航层和基本层构成的活性粉末混凝土(reactive powder concrete,RPC)基表面异形遮弹层。采用57mm半穿甲弹开展了初始速度320～705m/s的弹道冲击试验,获得了弹体破坏特征、弹体偏转角、最大侵彻深度、靶体破坏形态等试验结果,并提出了弹体侵彻深度简化计算公式。研究结果表明,由高强度、高韧性RPC材料构成的异形体可以显著削弱弹体侵彻威力。撞击时弹体均发生了不同程度的弯曲变形和破裂,弹道明显偏转,随着撞击速度的增大,弹体偏转角先增大后减小,当撞击速度为505m/s时,最大偏转角达到61.4°。试验后的钢纤维RPC基本层没有出现大面积冲击弹坑和震塌现象,裂缝浅而少,保持了较好的完整性。计算结果与试验数据吻合较好,验证了公式的合理性。
A reactive power concrete （RPC） shelter plate was proposed to develop a new protective technology for resisting penetration weapons. Ballistic experiments with the impact velocities of 320-705 m/s were carried out by using semi-armour-piercing projectiles with the diameter of 57 mm to investigate the anti-penetration capacities of RPC shelter plates with irregular barriers on their surfaces comprising yaw-inducing layers and basal plates. Some experimental results were obtained such as failure characteristics, deflexion angles and maximal penetration depths of projectiles, and failure modes of targets. And the simplified calculational formula for penetration depth was given. The penetration powers of the projectiles were weakened obviously by irregular barriers consisting ofoRPC with high strength and excellent toughness. Different buckling deformations and fractures occurred when projectiles impacted on irregular barriers. The trajectories were deflexed and penetration depths were reduced greatly. The deflexion angles of projectiles increased firstly and decreased subsequently with the increase of the impact velocity, the maximal deflexion angle was 61.4 °in the case of 505 m/s impact velocity. There were not any impact craters with large size or any scabbing after ballistic experiments, and the integralities of targets were good for a small quantity of cracks. The calculational results are in good agreement with the experimental data, and the simplified formula is feasible.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2010年第1期51-57,共7页
Explosion and Shock Waves
基金
国家自然科学基金项目(50908228)~~
关键词
爆炸力学
抗侵彻
弹道试验
活性粉末混凝土
偏转
mechanics of explosion
anti-penetration
ballistic experiment
reactive powder concrete yaw
