对 AA5083 搅拌摩擦焊接靶材多次弹丸冲击的实验与数值研究的对比分析。

Comparative analysis of experimental and numerical investigation on multiple projectile impact of AA5083 friction stir welded targets.

机构信息

Material Science and Technology, Technical University of Bergakademie Freiberg, Freiberg, Germany.

KPR Institute of Engineering and Technology, Centre for Machining and Material Testing, Coimbatore, India.

出版信息

PLoS One. 2023 Jul 27;18(7):e0285254. doi: 10.1371/journal.pone.0285254. eCollection 2023.

DOI:10.1371/journal.pone.0285254

PMID:37498917

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10374147/

Abstract

This research aims to investigate the ballistic resistance of base material (BM)and "Friction Stir Welded (FSW)", AA5083 aluminum alloy. The primary objective was to build a finite element model to predict kinetic energy absorption and target deformation under single and multiple projectile impact conditions. This study employed 7.62mm Hard Steel Core (HSC) projectiles produced from Steel 4340. The target was analyzed using commercially available Abaqus Explicit software for Finite Element Analysis. It was noticed that the generation of kinetic energy and surface residual velocity increases as the number of projectile strikes increases. In addition, the experimental ballistic test was conducted to validate the numerical results. Using the analytical Recht-Ipson model, each target's experimental residual velocity was determined. It was determined that weldments perform less well (30%) as compared to BM targets. Occurrence of plastic deformation during welding causes reduction in ballistic performance of weldments. For both the computational and experimental approaches, a correlation between residual velocities was found. The plastic deformations with ductile hole formation were observed in all the cases.

摘要

本研究旨在探究基体材料（BM）和“搅拌摩擦焊（FSW）”AA5083 铝合金的弹道阻力。主要目的是建立一个有限元模型，以预测在单个和多个弹丸冲击条件下的动能吸收和目标变形。本研究使用由钢 4340 制成的 7.62mm 硬钢芯（HSC）弹丸。使用商业可用的 Abaqus Explicit 软件对目标进行有限元分析。结果表明，随着弹丸冲击次数的增加，动能和表面残余速度的产生增加。此外，还进行了实验弹道测试来验证数值结果。使用分析的 Recht-Ipson 模型，确定了每个目标的实验残余速度。结果表明，与 BM 目标相比，焊件的性能较差（30%）。焊接过程中的塑性变形导致焊件的弹道性能下降。对于计算和实验方法，都发现了残余速度之间的相关性。在所有情况下都观察到了带有韧性孔形成的塑性变形。