结构参数对截锥弹低速正侵彻装甲靶的影响

INFLUENCE OF STRUCTURAL PARAMETERS ON PERPENDICULAR PENETRATING ARMOR OF TRUNCATED CONICAL PROJECTILE IN LOW SPEED

采用数值模拟和实验研究相结合的方法,对截锥形动能弹低速正侵彻装甲靶作用行为进行了分析,获得了弹头锥角、前级半径和着靶速度对侵彻性能的影响特性,并对目前常用的侵彻理论模型进行了验证。数值模拟结果表明,弹头锥角和前级半径是影响截锥形动能弹侵彻性能的重要因素;着靶速度对侵彻深度和侵彻过载有显著影响,对弹体变形也有一定影响。实验结果与数值模拟结果吻合较好,而侵彻理论模型与实验结果有较大差别,侵彻模型并不适合分析存在一定变形的弹靶侵彻问题。

The process of the truncated conical kinetic energy projectile penetrating armor at low speed is analyzed by means of numerical simulation and experiment to study the influence of the nose cone angle, forward radius and striking velocity on penetration performance, and the penetration model mostly common used is validated. The results of the numerical simulation show that the nose taper and radius take important roles in penetration performance; the striking velocity significantly affects the penetration depth and penetration overloads and also has some impact on the deformation of projectile. The comparisons of the results of the two methods with that of a theoretical calculation reveal that： numerical simulation results agree well with test results while theoretical calculating results and test results are quite different; suggesting that the penetration model is inapplicable to the penetration problems of large deformations.