Dynamic Response and Failure Mechanism of Pre-holed Q235 Steel Plate under Foam Projectile Impact Loading

被引：0

作者：

Han J. ^{[1
]}

Wang X. ^{[2
]}

Zhang L. ^{[3
]}

Li Z. ^{[2
]}

Wang P. ^{[2
]}

Zhao Z. ^{[1
]}

Lu T. ^{[1
]}

机构：

[1] State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, Jiangsu, Nanjing

[2] Advanced Materials and Energy Center, China Academy of Aerospace Science and Innovation, Beijing

[3] Naval Research Academy, Beijing

来源：

Binggong Xuebao/Acta Armamentarii | 2023年 / 44卷 / 12期

关键词：

dynamic response; failure mechanism; numerical simulation; pre-holed plate; stress state;

D O I：

10.12382/bgxb.2023.0359

中图分类号：

学科分类号：

摘要：

A pre-holed Q235 steel plate subjected to foam projectile impact is numerically investigated to assess the structural damage caused by combined blast and fragment loading upon detonation of cased explosives. The validity of the numerical model is checked against experimental measurements. The validated model is then employed to investigate the dynamic response, deformation / failure modes and hole-edge deflection of the pre-holed plate. The physical mechanisms of tearing failure initiated around the pre-hole are revealed using the stress triaxiality and Lode parameter for describing the state of stress. The influences of hole diameter and plate thickness on the impact resistance and failure mechanism are also quantified. Results show that the presence of a pre-formed hole significantly curtails the impact resistance of the steel plate: With increase in hole diameter or decrease in plate thickness, the hole-edge deflection of the steel plate grows, while the projectile momentum causing tearing failure drops. © 2023 China Ordnance Society. All rights reserved.

引用

页码：3654 / 3666

页数：12

共 27 条

[1] REN X B, JIANG P, LI Y, Et al., Review of the damage and protection of warship structures under internal blast loading, Science China: Physics, Mechanics & Astronomy, 51, 12, pp. 7-26, (2021)
[2] CHEN S, The great ships sank and the age of unmanned combat began, Global Times
[3] SUN M Y, YU X Z., Future focus of the United States Navy carrier-based aircraft wing, Military Digest, 457, 1, pp. 47-50, (2020)
[4] CHEN C M., A possible combination of America 's future carrier fleet [ J ], Avation World, 152, 2, pp. 34-37, (2012)
[5] LI D, ZHENG Y, CHEN C H, Et al., Review on damage of typical ship protective structures under explosion load, Journal of Ship Mechanics, 24, 4, pp. 543-557, (2020)
[6] ZHANG X D, HU H, JIANG L J., Tactical and technical characteristics analysis of the Tomahawk cruise missile of the United States Navy, Aerodynamic Missile Journal, 431, 11, pp. 31-36, (2020)
[7] YAO M L, HOU H L, LI D, Et al., Dynamic response of Y-shaped sandwich plate and the influence factors of anti explosion performance under the explosion load in the cabin, Acta Armamentarii
[8] LI Y, CHEN Z, REN X B, Et al., Experimental and numerical study on damage mode of RC slabs under combined blast and fragment loading [ J ], International Journal of Impact Engineering, 142, (2020)
[9] LI M, ZHU X, HOU H L, Et al., Numerical simulation of the damage effects of clamped square plate subjected to the impact of blast wave and fragments, Journal of National University of Defense Technology, 39, 6, pp. 64-70, (2017)
[10] LI M, HOU H L, ZHU X, Et al., Equivalent test method to simulate combined damage action of air blast shock wave and high speed fragment group of fragment killing warhead, Journal of Vibration and Shock, 39, 1, pp. 184-190, (2020)

← 1 2 3 →