装甲钢抗弹性能数学模型研究

借助7.62mm穿甲燃烧弹测定了硬度40~53HRC、15mm厚Si-Mn-B装甲钢临界安全角,作为抗弹性能的表征值,测定对应靶板的力学性能,对抗弹性能与力学性能之间的关系进行研究。以临界安全角为因变量,靶板力学性能为自变量,利用人工神经网络和Turbo-Basic编写的多元逐步回归程序建立了Si-Mn-B装甲钢临界安全角与力学性能之间的数学模型,再通过模型预报,选择出最佳抗弹性能与力学性能之间的数学模型θ°=15.3189+8.1031×(dHB)-0.0049×(Rm)-0.0443×(Akv)+0.1214×(A),并得出了力学性能对抗弹性能的影响程度依次为dHB>Rm>Akv>A。

Research on ballistic performance mathematic model of armour steel

The critical safe angles are measured using 7.62mm diameter armour-piercing projectiles at Si-Mn-B armour steel plate with hardness in the range of 40-53 HRC, thickness of 15 mm. The critical safe angle is used to represent the ballistic performance. Mechanical property of corresponding target plate is also measured, and the relation between mechanical properties and ballistic performance is studied. The mathematics model between mechanical properties and ballistic performance is built up by using artificial nerve net and multistep regression program of Turbo-Basic language, and the best model is chosen by comparing the prediction and the critical safe angle. The best model is shown as following:θ°=15.3189+8.1031×(dHB)-0.0049×(Rm)-0.0443×(Akv)+0.1214×(A). The successive influences of mechanical properties on the ballistic performance are dHB ,Rm ,Akv and A.