基于统一强度理论的高速钨杆弹体侵彻陶瓷靶研究  

Penetration analysis of high-velocity tungsten rod on ceramic targets using unified strength theory

作　　者：王延斌[1] 朱轶韵[2] 俞茂宏[1] 魏雪英[3] 

机构地区：[1]西安交通大学建筑与力学学院 [2]西安理工大学水利水电学院,陕西西安710048 [3]长安大学建筑工程学院,陕西西安710054

出　　处：《爆炸与冲击》2004年第6期534-540,共7页Explosion and Shock Waves

摘　　要：将陶瓷靶高速冲击下的响应分为空腔、破碎、径向裂纹、弹性和未扰动等五个响应区,针对破碎区的特点,提出了基于统一强度理论的统一压剪准则。利用静态空腔膨胀理论求出了空腔膨胀压力,即A T模型中的靶体阻力Rt,求出了钨杆弹高速撞击陶瓷靶时的侵彻深度,分析了强度参数b和压剪系数β对靶体阻力和侵彻深度的影响,并与试验结果及其他研究者的结果进行了比较。通过b、β的变化,本文中的成果可用于各种脆性材料的侵彻分析。Ceramics can be comminuted near the tip of the penetrator under high-velocity impact. The comminution of ceramics is considered in this paper and the target is divided into five zones of cavity, comminuted, cracked, elastic, unperturbed one. It is assumed that materials in the comminuted zone obey the unified pressure-shear criterion presented in this paper based on a unified strength theory (UST). Target resistances Rt of A-T model based on static cylindrical expansion theory are obtained. The influences of parameter b of the UST and pressure-shear coefficient β on Rt are discussed. The depth of penetration is calculated using A-T model when tungsten long rod impacting ceramics target at 1.5-4.5 km/s. Results of this model are compared with experimental data and tests of other scholars.

关 键 词：固体力学 统一压剪准则 统一强度理论 陶瓷 靶体阻力 侵彻深度 

分 类 号：O348[理学—固体力学]