The coupled melting-cutting abrasion model of ogive-nose projectile penetration into concrete targets

被引：0
作者：
Li Z. [1 ]
Ning J.-G. [1 ]
Ma T.-B. [1 ]
Xu X.-Z. [1 ]
机构：
[1] State Key Laboratory of Explosion Science and Technology of Beijing Institute of Technology, Beijing
来源：
Gongcheng Lixue/Engineering Mechanics | 2020年 / 37卷 / 04期
关键词：
Concrete target; Couple model; Explosion mechanics; Penetration; Projectile abrasion;
D O I：
10.6052/j.issn.1000-4750.2019.06.0294
中图分类号：
学科分类号：
摘要：
The mass abrasion of projectiles is an obvious phenomenon during the penetration into concrete targets, which will result in the mass loss and bunting nose. According to the experimental observation, the thermal melting and cutting by the aggregate on the surface of a projectile are the main mechanisms for the mass abrasion. In this paper, a coupled melting-cutting abrasion model is proposed combing with these two main abrasion mechanisms and the dynamic cavity expansion theory (CET). The mass loss of the projectile is obtained by the coupled abrasion model because of melting and cutting using the two-dimensional thermal conduct equation and modified Rabinowizc theory, respectively. The relationship between the two abrasion mechanisms is established based on the Johnson-Cook model. Then, the penetration performance parameters, such as the penetration depth, variation of projectile shape and mass loss rate, are obtained by the coupled abrasion model. The calculated results were compared with the experimental data. The comparison results show that the theoretical model prediction is in good agreement with the experimental data, which verifies the validity of the proposed coupled melting-cutting abrasion model. Finally, the evolution of the kinetic parameters and nose shape variation during the penetration are discussed. This work can provide some reference for the research of mass abrasion phenomena in the penetration process. © 2020, Engineering Mechanics Press. All right reserved.
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页码：236 / 247
页数：11
相关论文
共 41 条
[1]  
Frew D.J., Hanchak S.J., Green M.L., Et al., Penetration of concrete targets with ogive-nose steel rods, International Journal of Impact Engineering, 21, 6, pp. 489-497, (1998)
[2]  
Xu X.Z., Ma T.B., Ning J.G., Failure mechanism of reinforced concrete subjected to projectile impact loading, Engineering Failure Analysis, 96, pp. 468-483, (2019)
[3]  
Forrestal M.J., Frew D.J., Hanchak S.J., Et al., Penetration of grout and concrete targets with ogive-nose steel projectiles, International Journal of Impact Engineering, 18, 5, pp. 465-476, (1996)
[4]  
Forrestal M.J., Altman B.S., Cargile J.D., Et al., An empirical equation for penetration depth of ogive-nose projectiles into concrete targets, International Journal of Impact Engineering, 15, 4, pp. 395-405, (1994)
[5]  
Xu X.Z., Ma T.B., Wang Z.H., A theoretical model of rigid projectile perforation of concrete slabs using the energy method, Science China Technological Sciences, 61, 5, pp. 699-710, (2018)
[6]  
Xu X.Z., Ma T.B., Ning J.G., The damage and failure mechanism of the concrete subjected to shaped charge loading, Engineering Failure Analysis, 82, pp. 741-752, (2017)
[7]  
Ning J., Zhou F., Wang Z., Et al., Constitutive model, failure mechanism and numerical method for reinforced concrete under intensive impact loading, Science China Technological Sciences, 46, pp. 323-331, (2016)
[8]  
Davis R.N., Neely A.M., Jones S.E., Mass loss and blunting during high-speed penetration, Proceeding of the Institution of Mechanical Engineers: Part C, 218, 9, pp. 1053-1062, (2004)
[9]  
Jones S.E., Foster J.C., Toness O.A., Et al., An estimate for mass loss from high velocity steel penetrators, Proceedings of the ASME pvp-435 Conference on Thermal-Hydraulic Problems, Sloshing Phenomena, and Extreme Loads on Structures, (2002)
[10]  
Klepaczko J.R., Hughes M.L., Scaling of wear in kinetic energy penetrators, International Journal of Impact Engineering, 31, 4, pp. 435-459, (2005)
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