混凝土房屋结构靶的超高速撞击特性研究

  • 摘要: 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°,在底层板上的分布范围大于穿孔大小。

     

    Abstract: 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 hyperve-locity 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 pen-etrated 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 ex-perimental 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 considera-ble speed.Some of them had strong killing effect on the staff with 23°expansion angle,while distribution range was greater than the perforation diameter on the bottom plate.

     

/

返回文章
返回