Normal impact of hard projectiles on concrete targets

This research study involves obtaining an analytical model for the perforation of unreinforced concrete targets by a hemispherical hard projectile. Dynamic cavity expansion theory and the reflection of compressive waves from the end of the concrete targets are used for developing the analytical mode...

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Bibliographic Details
Published in:Structural concrete : journal of the FIB 2013-06, Vol.14 (2), p.176-183
Main Authors: Khazraiyan, Najmeh, Liaghat, Gholam Hossein, Khodarahmi, Hossein
Format: Article
Language:English
Subjects:
analysis and design methods
analytical model
Applied sciences
Buildings. Public works
concrete structure
Concretes
Concretes. Mortars. Grouts
dynamic actions/earthquakes
Dynamic tests
Exact sciences and technology
Friction
General (composition, classification, performance, standards, patents, etc.)
hemispherical rigid projectile
Holes
Impact velocity
Materials
Mathematical analysis
Mathematical models
perforation process
Projectiles
Strength of materials (elasticity, plasticity, buckling, etc.)
Structural analysis. Stresses
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Summary:This research study involves obtaining an analytical model for the perforation of unreinforced concrete targets by a hemispherical hard projectile. Dynamic cavity expansion theory and the reflection of compressive waves from the end of the concrete targets are used for developing the analytical model. The effect of the friction coefficient is also investigated in the analysis. Numerical modelling of the problem has been performed in LS‐DYNA code for validating the analytical results. Johnson‐Holmquist concrete and rigid material models have been employed for the concrete and the projectile respectively. The impact velocity range considered in this work is between 250 and 850 m/s. No projectile erosion is considered in this range. The analytical results have been compared with numerical results and show good agreement with numerical simulations.
ISSN:1464-4177
1751-7648
DOI:10.1002/suco.201200047