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Critical impact energy for spalling, tunnelling and penetration of concrete slab impacted with hard projectile

  • Structural Engineering
  • Published:
KSCE Journal of Civil Engineering Aims and scope

Abstract

Penetration is the basic element of designing protective concrete structure against the local impact damage of hard missile. Impact energy is the dominant cause of damage in moving accidents. When hard projectile collides with concrete target, it is the impact energy of the projectile that makes concrete target to deform. Therefore, it is vital to study critical impact energy required to causes penetration. An analytical model is developed to predict the required critical impact energy for maximum penetration without rear effects in concrete slabs when it is impacted with hard projectile. The nose shape factor N i also has been introduced with inclusion of empirical friction factor N f , as modification in Chen & Li nose shape factor for ogive nose hard projectile. The newly developed analytical model and nose shape factor N i is examined for CRH = 2.0, CRH = 3.0, and CRH = 4.25. It was found that the predicted results from analytical model with nose shape N i are in close relation with experimental data in all cases as compared to predicted results with traditional Li and Chen nose shape N*. In, General, the analytical model generates encouraging prediction which is consistent and follows a general trend of experimental results.

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Authors and Affiliations

  1. Dept. of Civil & Architectural Engineering, College of Engineering, University of Buraimi, P.O. Box 890, Al - Buraimi, Oman

    Qadir Bux alias Imran Latif

  2. Faculty of Civil & Environmental Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Johor, 86400, Malaysia

    Ismail Abdul Rahman

  3. Dept. of Mechanical, Faculty of Engineering, National Defence University of Malaysia, Kuala Lumpur, 57000, Malaysia

    Ahmad Mujahid Ahmad Zaidi

  4. Faculty of Mechanical Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Johor, 86400, Malaysia

    Kamran Latif

Authors
  1. Qadir Bux alias Imran Latif
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  2. Ismail Abdul Rahman
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  3. Ahmad Mujahid Ahmad Zaidi
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  4. Kamran Latif
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Correspondence to Qadir Bux alias Imran Latif.

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Imran Latif, Q.B.a., Rahman, I.A., Ahmad Zaidi, A.M. et al. Critical impact energy for spalling, tunnelling and penetration of concrete slab impacted with hard projectile. KSCE J Civ Eng 19, 265–273 (2015). https://doi.org/10.1007/s12205-012-0489-9

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  • DOI: https://doi.org/10.1007/s12205-012-0489-9

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