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Qadir Bux alias Imran Latif,Ismail Abdul Rahman,Ahmad Mujahid Ahmad Zaidi,Kamran Latif 대한토목학회 2015 KSCE JOURNAL OF CIVIL ENGINEERING Vol.19 No.1
Penetration is the basic element of designing protective concrete structure against the local impact damage of hard missile. Impactenergy is the dominant cause of damage in moving accidents. When hard projectile collides with concrete target, it is the impactenergy of the projectile that makes concrete target to deform. Therefore, it is vital to study critical impact energy required to causespenetration. An analytical model is developed to predict the required critical impact energy for maximum penetration without reareffects in concrete slabs when it is impacted with hard projectile. The nose shape factor Ni also has been introduced with inclusion ofempirical friction factor Nf, as modification in Chen & Li nose shape factor for ogive nose hard projectile. The newly developedanalytical model and nose shape factor Ni is examined for CRH = 2.0, CRH = 3.0, and CRH = 4.25. It was found that the predictedresults from analytical model with nose shape Ni are in close relation with experimental data in all cases as compared to predictedresults with traditional Li and Chen nose shape N*. In, General, the analytical model generates encouraging prediction which isconsistent and follows a general trend of experimental results.