弹头形状对高速侵彻效应的影响  

Influence of Projectiles Nose Shape on High Speed Penetration Effect

作　　者：宋梅利[1] 王晓鸣[1] 李文彬[1] 刘志林[1] 

机构地区：[1]南京理工大学智能弹药技术国防重点学科实验室,南京210094

出　　处：《弹道学报》2014年第3期66-71,共6页Journal of Ballistics

基　　金：国家自然科学基金项目(51278250)

摘　　要：对60mm口径的尖卵型和双弧线型弹体进行高速侵彻素混凝土靶试验,弹体撞击速度为800~1 400m/s。试验结果表明,在所研究的速度范围内,弹体侵彻深度随着靶速度呈线性增加的趋势,弹体质量侵蚀小于5%,可近似认为刚性弹侵彻。在空腔膨胀理论基础上,通过建立尖卵型和双弧线型弹头部形状函数,分析了2种不同弹头形状弹体的受力情况,建立了阻力模型,数值求解了弹体的侵彻深度。理论计算结果与试验结果吻合较好,分析结果表明,弹体质量、着靶速度、靶体一致的条件下,双弧线型弹体的侵彻能力比尖卵型高约9%。The experiments of the ogive and double-arc nose projectiles with 60 mm caliber penetrating concrete targets at high-speed were carried out, and projectiles impact velocity is 800--1 400 m/s. The experiment results show that the penetration depth of projectile increases linearly with the impacting velocity, and the mass loss of projectile is less than 5%. The penetration can be approximately considered rigid penetration. Based on the cavity expansion theory,the nose shape function of the ogive and double arc nose projectiles were established,and the resistant forces on the two different nose-shape projectiles were analyzed. The penetration depth of projectiles were calculated by numerical method. The theoretical results agree well with the experiment. Theoretical calculations show that the penetration capability of double-arc nose projectiles is 9% higher than that of the ogive nose projectiles under the conditions of same projectile mass ,impact velocity and target.

关 键 词：高速侵彻 弹丸 形状函数 侵彻深度 混凝土 

分 类 号：O385[理学—流体力学]