Ballistic Impact Analysis of Thin Shell and Curved Surface against Different Projectile Nose Shape

Vimit V. Kosey1, Prof. Harish N. Sayankar2, Dr.Vinod.S.Gorantiwar

1M. Tech. Student (CAD/CAM), 2Prof. , 3Principal, Shri Sai College of Engg & TechnologyBhadrawati,Chandrapur, Maharashtra, India

Abstract: Numerical simulations are increasingly becomingan important tool to obtain efficient designs of protectivestructures, and the existing literature shows that manyphenomena can be accurately described by standard methodsand models. This thesis, specifically, focuses on novelmethods of modeling and simulating ballistic impact.Experiments are needed to validate such simulations, so numerous tests were studied to investigate how projectile nose-shape, plate layering, target strength, ductility, and workhardening affect the penetration and perforation behavior ofvarious structural configurations. These tests provide new information about the behavior of materials subjected to ballistic impact, and are valuable input for the evaluation ofthe numerical simulations. As more complex materialssystems are introduced in engineering practice, the design engineer faces the of utilizing homogenization techniques or detailed numerical models. The latter offers a number of advantages, such as the ability to introduce separateconstitutive laws and failure criteria for each phase, at theexpense of computation cost. The aim of this study is to givegeneral information about the most commonly used materialsand ballistic test methods. In addition, to summarize the topicsrelated to simulation methods such as FEM and numericalmethods which are use most in ballistics.A generalizednumerical and experimental formulation is presented for theprediction of ballistic impact behavior on various surfacesagainst different projectile nose shape. The ballistic resistance,failure mechanism and the energy absorption of the structurewas investigated thoroughly through experimentation andnumerical simulations. influence of projectile shape, incidencevelocity of the projectile.

Keywords: Ballistic impact loading, Analysis Projectile,Cylindrical ,Structures(key words)

I. INTRODUCTION

Investigation pertaining impact response of the shell has secured its own place in different engineering disciplines likedesigning of helmet, boilers, compressors, aero plane, navalindustry (boat hull) and outer-body shells of automobiles andnow in the field of lithium ion batteries. The development oflightweight structures having superior energy absorptioncharacteristics has been drawn the major attention of theresearchers over the recent years. In this context, the sandwichstructures have played a major role due to their very highstiffness-to weight and bending strength-to-weight ratio.Because of these superior properties, it is widely used for civilian as well as military applications (racing cars, aerospacemanufacturing, helicopters, jet aircraft, automobile structuresetc.). During their service life, these structures may frequentlybe subjected to impact load (natural or man made), which cancause local failure and results in terms of catastrophic failureof the structure subsequently. Fiber-reinforced composite andaluminium were extensively used as face sheet material,whereas cellular and porous material was used frequently ascore materials.