2D Asymmetrical Simulation Study On Ogive Nose Hard Missile Penetrating Concrete Slab With Effect Of CRH Ratio

Abstract

Great demand exists for more efficient design to protect important and defensive structures such as nuclear plants, Power plants, Weapon Industries, weapons storage places, water retaining structures, & etc, against impact of kinetic projectiles such as dynamic loading, incident occurs in nuclear plants, terrorist attack, Natural disasters like tsunami and etc., in various impact and blast scenarios for both civilian and military activities generated both accidentally and deliberately. In many cases, projectiles can be treated as rigid bodies when their damage and erosion are not severe. Due to the intricacy of the local impact damage (Penetration), investigations are generally based on experimental data. Conclusions of the experimental observations are then used to guide engineering models. Local damages studies normally fall into three categories, i.e. empirical formulae based on data fitting, idealized analytical models based on physical laws and numerical simulations based on computational mechanics and material models. In this study, number of asymmetrical 2D numerical simulation have done on concrete slabs against the impact of ogive nose rigid projectile to examine the penetration resistance and critical impact kinetic energy behavior of concrete targets, varies with striking velocity of the projectile from low to high with the effect of CRH ratio from 2.0 and 6.0, using Concrete Damaged Plasticity Model with ABAQUS/Explicit dynamic analysis in ABAQUS. Encouraging good agreement observed when the developed numerical simulation results were compared with experimental and other formulae.

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