Experimental and Numerical Investigation of the Impact of a Blunt Projectile with a Perforated Plate
الموضوعات :
M Farahmand
1
(Department of Mechanical Engineering , Imam Hossein Comprehensive University, Tehran, Iran)
Kh Vahedi
2
(Department of Mechanical Engineering , Imam Hossein Comprehensive University, Tehran, Iran)
A Naddaf Oskouei
3
(Department of Mechanical Engineering , Imam Hossein Comprehensive University, Tehran, Iran)
R Hosseini
4
(Department of Mechanical Engineering , Imam Hossein Comprehensive University, Tehran, Iran)
الکلمات المفتاحية: AISI 52100 Steel Projectile, Impact, Perforated plate, AISI 1045 Steel targets, Projectile deviation, Target,
ملخص المقالة :
This paper experimentally and numerically investigated the impact of a blunt projectile to perforated steel targets. In this study, projectiles were made of AISI 52100 and perforated plates were made of AISI 1045. In order to investigate the effect of the hole diameter on the projectile, three different diameters of the hole were considered, along with the effect of the projectile overlap with the hole. After examining different hitting states, the projectile was deviated from its movement direction after hitting the hole and changed from vertical hit to skew. The deviation of the projectile increased when the diameter of the hole increased or the amount of projectile overlap with the hole increased. Then, numerical modeling of impacting the projectile was performed by ABAQUS software and the results were compared with experimental results and the accuracy of the model was confirmed. And this model was used to investigate the effect of initial projectile speed on deviation of the projectile, accordingly, an increase in the initial velocity of the impact led to an increase in the deviation of the projectile.
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