B-6和B-7级弹道装甲设计优化和有限元分析：一种建模方法

Design optimization and FEA of B-6 and B-7 levels ballistics armor: A modelling approach

中文关键词: 散热器装甲  弹道模拟  约翰逊-库克模型  穿甲弹  穿孔D形装甲板

英文关键词: radiator armor  ballistics simulation  Johnson-Cook model  armor-piercing projectile  perforated D-shaped armor plate

中文摘要:

      利用有限元分析对由穿孔D形装甲板和底部装甲板组合而成的散热器装甲所提供的防弹保护进行评估.采用ANSYS Explicit Dynamics模拟7.62 mm穿甲弹对Aluminum AA5083-H116和Steel Secure 500装甲的弹道撞击,重点评估了不同撞击点处的材料变形和抗穿透性.虽然D形装甲板被穿甲弹穿透,但穿孔D形装甲板和底部装甲板的组合成功阻止了穿透.使用SolidWorks和ANSYS等软件建立基于有限元方法的数值模型,分析散热器装甲与子弹的相互作用.散热器装甲的穿孔设计为保持气流以维持散热器功能,孔径小于弹头芯直径以保护散热器组件.预测了由于非对称撞击导致弹头芯弯曲而引起的脆性断裂以及由此产生的碎片无法穿透穿孔底部装甲板.穿孔D形装甲板表面因弹片撞击而形成弹坑.数值模型准确预测了与装甲接触时的孔洞增长和弹体穿透,证明了散热器装甲能够有效保护散热器组件.

英文摘要:

      Utilizing finite element analysis, the ballistic protection provided by a combination of perforated D-shaped and base armor plates, collectively referred to as radiator armor, is evaluated. ANSYS Explicit Dynamics is employed to simulate the ballistic impact of 7.62 mm armor-piercing projectiles on Aluminum AA5083-H116 and Steel Secure 500 armors, focusing on the evaluation of material deformation and penetration resistance at varying impact points. While the D-shaped armor plate is penetrated by the armor-piercing projectiles, the combination of the perforated D-shaped and base armor plates successfully halts penetration. A numerical model based on the finite element method is developed using software such as SolidWorks and ANSYS to analyze the interaction between radiator armor and bullet. The perforated design of radiator armor is to maintain airflow for radiator function, with hole sizes smaller than the bullet core diameter to protect radiator assemblies. Predictions are made regarding the brittle fracture resulting from the projectile core′s bending due to asymmetric impact, and the resulting fragments failed to penetrate the perforated base armor plate. Craters are formed on the surface of the perforated D-shaped armor plate due to the impact of projectile fragments. The numerical model accurately predicts hole growth and projectile penetration upon impact with the armor, demonstrating effective protection of the radiator assemblies by the radiator armor.