Structural Engineering and Mechanics

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Penetration mechanisms of non-deforming projectiles into reinforced concrete barriers

  • Dancygier, Avraham N. (Department of Civil Engineering and National Building Research Institute) ;
  • Yankelevsky, David Z. (Department of Civil Engineering and National Building Research Institute)
  • Published : 2002.02.25
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Abstract

Static and dynamic penetration tests of reinforced concrete (RC) slab specimens are described and discussed. The experimental study was aimed at a better understanding of mechanisms that are involved in dynamic penetration, through their identification in static tests, and by establishing their relative influence in similar dynamic cases. The RC specimens were $80{\times}80-cm$ square plates, and they were made of 30 MPa concrete. The non-deforming steel penetrator was a 50-mm diameter steel rod with a conical nose of 1.5 aspect ratio. Impact penetration tests were carried out with an air gun, which launched the projectiles at velocities of up to 300 m/sec. The static tests were conducted using a closed loop displacement control actuator, where the penetrator was pushed at a constant rate of displacement into the specimen. The static tests reveal important mechanisms that govern the penetration process and therefore contribute to a better understanding of RC barriers resistance to non-deforming projectiles impact.

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References

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