钨球正撞击下低碳钢板的极限贯穿厚度研究

Research on Perforation Limit Thickness of Low Carbon Steel Plates Impacted Normally by Tungsten Spheres

研究低碳钢板在钨球正撞击下的极限贯穿厚度.采用6射弹弹道极限试验数据处理方法通过试验获得Φ6.0mm(93W)、Φ7.0mm(93W)、Φ6.0mm(95W)和Φ7.5mm(95W)共4种钨球对6种不同厚度Q235A钢板正撞击下的弹道极限速度和极限贯穿厚度范围.采用Autodyn软件进行了同试验条件下的数值仿真,仿真模型被验证后,通过仿真获得了极限贯穿厚度范围,同时分析了钨球正撞击侵彻过程中的能量转换规律.基于能量守恒,建立了钨球对低碳钢板正撞击下极限贯穿厚度的计算模型.采用所建立的计算模型计算得到:Φ6.0mm(93W)、Φ7.0mm(93W)、Φ6.0mm(95 W)和Φ7.5mm(95 W)4种钨球正撞击下Q235A钢板的极限贯穿厚度分别为16.95,19.17,17.30,21.50mm,计算结果与试验和数值仿真所获得范围误差不大于10%.研究结果为杀爆战斗部毁伤元的设计提供了基础数据以及方法支撑.

Perforation limit thickness of low carbon steel plates impacted normally by tungsten spheres was studied. Based on six-projectile test data analysis method, ballistic limit velocity and the range of perforation limit thickness were obtained by using tungsten spheres with φ6.0 mm （93 W）, φ7.0 mm（93 W）, φ6.0 mm（95 W） and φ7.5 mm（95 W） to impact Q235A steel plates with 6 different thicknesses. Numerical simulation with the same experimental conditions was conducted using Autodyn-3D software. After the reliability of simulation model was verified, perforation limit thickness range was obtained by simulation and the energy transformation rule of the penetration process was analyzed. The calculation model for perforation limit thicknesses of steel plates impacted normally by tungsten spheres was established based on the principle of energy eonservati.on. The calculation results of the perforation limit thicknesses of Q235A steel plates struck normally by tungsten spheres with φ6.0 mm （93 W） ,φ7.0 mm（93 W） ,φ6.0 mm （95 W） and φ7.5 mm（95 W） were respectively 16.95, 19.17, 17.30 and 21.50 mm. The error between the experiment results and the range obtained from simulation analysis is no more than 10%. This research provides basic data and the method for the design of the kill element of blast- fragmentation warhead.