On the friction effects on rigid-body penetration in concrete and aluminium-alloy targets

• Published in: 防务技术 Vol. 15; no. 4; pp. 576 - 581
• Main Authors: C.G. Chai, A.G. Pi, Q.M. Li, F.L. Huang
• Format: Journal Article
• Language: English
• Published: Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, Sichuan, 621900, China%State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, China%School of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester, M139PL, UK 2019
• Subjects: Penetration; Friction; Concrete; Aluminium
• ISSN: 2214-9147; 2214-9147
• DOI: 10.3969/j.issn.2214-9147.2019.04.013

The friction on the projectile shank is usually excluded in the penetration analysis due to the difficulties to measure the pressure and frictional coefficient. In this article, the frictional force on projectile shank is discussed indirectly through the comparison between experimental data and empirical/analytical for-mulas of the penetration depth for both concrete and aluminium-alloy targets. It is found that the effect of the frictional force along the projectile shank can be further discussed by the afore comparison and discussion and cannot be ignored because of the relatively large effecting area, especially for deep penetration of concrete and aluminium-alloy targets, where the friction will account for more proportion of penetration resistance.