摘要
采用统一强度理论作为岩石材料的屈服准则,建立了长杆弹垂直侵彻岩石靶体的柱形空腔膨胀模型,给出了卵形长杆弹侵彻靶体深度的理论计算公式,求出了弹体以450～1400m/s的速度撞击岩石靶体的侵彻深度,并和试验结果进行了比较。分析了统一强度理论参数b对侵彻深度的影响。
A cylindrical cavity expansion model for rock targets with penetration of long rod projectile is presented by using the unified strength theory which consists of a generic of convex piecewise linear yield criteria. The relationship of cavity expansion pressure and cavity expansion velocity is obtained. The analytical equation of penetration depth is given and the penetration depth of long rod projectiles when impacting rock targets at 450-1400 m/s is calculated. The results are compared with experimental data. The influences of the weighting coefficient b of the unified strength theory on the penetration depth are investigated.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第8期1301-1307,共7页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金资助项目(59779028)
