Analysis on the bending of a projectile induced by asymmetrical mass abrasion

Asymmetrical nose abrasion is one of the dominant reasons to cause a projectile bending, yawing and break when it strikes concrete target normally at high velocity. The spherical cavity-expansion model is employed to evaluate the transverse load in case of asymmetrical mass abrasion. With considerin...

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Bibliographic Details
Published in:International journal of impact engineering 2012, Vol.39 (1), p.16-27
Main Authors: Zhao, J., Chen, X.W., Jin, F.N., Xu, Y.
Format: Article
Language:English
Subjects:
Abrasion
Abrasion resistance
Applied sciences
Asymmetrical mass abrasion
Asymmetry
Bending
Building structure
Buildings. Public works
Concrete structure
Concrete target
Construction (buildings and works)
Drag force
Exact sciences and technology
Fluid dynamics
Fracture mechanics (crack, fatigue, damage...)
Fundamental areas of phenomenology (including applications)
Normal penetration
Nose
Penetrator
Physics
Projectiles
Solid mechanics
Static elasticity (thermoelasticity...)
Structural and continuum mechanics
Transverse loads
Turbulent flows, convection, and heat transfer
Wakes
Yield
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Summary:Asymmetrical nose abrasion is one of the dominant reasons to cause a projectile bending, yawing and break when it strikes concrete target normally at high velocity. The spherical cavity-expansion model is employed to evaluate the transverse load in case of asymmetrical mass abrasion. With considering the axial drag force that can reflect continuous varying of nose shape, a method is proposed to analyze the yielding of a normal penetrating projectile under the combination of compression and bending. It indicates that the critical yielding cross-section of a projectile is distinctly sensitive to the transverse load induced by asymmetrical mass abrasion when it suffering large axial drag force. The influence of cartridge thickness of a projectile, concrete strength and the initial impact velocity as well as the discrepancy of asymmetrical mass abrasion on the yielding function is discussed.
ISSN:0734-743X
1879-3509
DOI:10.1016/j.ijimpeng.2011.09.001