نفوذ پرتابه های انرژی جنبشی در اهداف بتنی آسیبدیده به روش تئوری، عددی و  تجربی

Khazraiyan, Najmeh

Volume 17, Issue 3 (5-2022) مواد پرانرژی 2022, 17(3): 181-194 | Back to browse issues page

‎ 20.1001.1.17353629.1401.17.3.5.4

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Khazraiyan N. نفوذ پرتابه های انرژی جنبشی در اهداف بتنی آسیبدیده به روش تئوری، عددی و تجربی. مواد پرانرژی 2022; 17 (3) : 5
URL: http://isaem.ir/article-1-1453-en.html

نفوذ پرتابه های انرژی جنبشی در اهداف بتنی آسیبدیده به روش تئوری، عددی و تجربی

Najmeh Khazraiyan ^*

, n_khazraiyan@iiau.ac.ir

Abstract: (890 Views)

In this paper, the process of penetration of kinetic energy projectiles as the main part of two-stage anti-structure warheads in pre-drilled and damaged concrete targets was investigated using theoretical, numerical and experimental methods. Based on the dynamic cavity expansion theory, the study of the penetration of kinetic energy projectiles in pre-drilled concrete targets has been investigated. In this regard, by modifying the Teland model, the estimated damage to the concrete targets, as well as determining the geometric characteristics of the cavity and tunnel created on concrete purpose, then using empirical methods and numerical simulations, the analysis of penetration of leading projectiles with copper liners and cone geometry has been extracted on concrete purpose, tunnel diameter, geometry of the front and back cavity. The results of empirical tests and numerical simulations of the propagation of the propellants in concrete targets indicate the repeatability and proper matching of the two methods. Determining the diameter of the tunnel in damaged concrete targets, the analytical model of the Tandel has been corrected by considering the effects of the front cavity in the penetration process and by applying the damage effects in it, an optimal model for the penetration of kinetic energy projectiles in targets Damaged puncture has been developed. Comparison of the results of the corrective theoretical model with experimental results compared to other analytical models as well as numerical simulations has a good accuracy. The results according to the predictions show that the damage to a concrete target increases the depth of penetration to a significant extent compared to the pre-damaged state.

Article number: 5

Keywords: Forward projectile, Main projectile, Damaged concrete, Penetration depth, Analytical model.

Full-Text [PDF 1274 kb] (34 Downloads)

Type of Study: Research | Subject: ضربه
Published: 2023/06/4