混凝土房屋结构靶的超高速撞击特性研究

为了研究动能武器对混凝土类目标的毁伤效果，采用试验和数值仿真手段，对钨合金弹丸超高速撞击混凝土房屋结构靶进行了研究，探讨了混凝土房屋结构靶在超高速撞击条件下的毁伤特点。试验所用的钨合金弹丸重35g，长径比为5，撞击速度2．5km/s；混凝土房屋结构靶抗压强度34．4MPa。研究发现：在开展的试验条件下，房屋结构靶顶层板和底层板被穿透，未发生解体破坏；靶体中加筋对靶体的穿孔大小及结构破坏没有明显的降低作用；速度2．5km/s的弹丸经撞击40mm厚混凝土板后的速度降到2．0～2．3km/s 范围内；弹丸超高速撞击混凝土房屋结构顶层板形成的碎片云速度较高，部分碎片对人员具有较强的杀伤效果，该部分碎片的扩张角为23＆#176;，在底层板上的分布范围大于穿孔大小。

Research on hypervelocity impact characteristics of concrete building structures target

In order to study the kinetic energy weapon damage effect to concrete targets, based on the experiment and numerical simulation method,the tungsten alloy projectile hypervelocity impacting concrete building structure was studied and concrete building structure damage characteristics were discussed under the condition of hypervelocity impact.The weight of tung-sten alloy projectile used in the test is 35g,the ratio of which length to diameter is 5,and which impact velocity is 2.5km/s;the concrete compressive strength of building structures target is 34.4MPa.Studies had found that the top plate and bottom plate of the structure target were penetrated without the occurrence of disintegration under the experimental conditions.In addition, reinforcement in the target body had no significant effect on the test results.Calculated and experimental results showed that speed of projectile fell from 2.5km/s to 2.0km/s-2.3km/s after impacting 40mm concrete slab.The debris cloud from concrete structure top plate had considerable speed.Some of them had strong killing effect on the staff with 23＆#176;expansion angle,while distribution range was greater than the perforation diameter on the bottom plate.