International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 01 | Jan 2025
p-ISSN: 2395-0072
www.irjet.net
Optimization of Material Armor for Bullet Impact using Explicit Dynamic Numerical Method Bhagyashri Jadhavar1, Dr.Digambar Date2, Dr.V.V.Mane3 1M.Tech Student Dept. of Mechanical Engg. College of Engineering Dharashiv, Maharashtra, India 2H.O.D. Dept. of Mechanical Engg. College of Engineering Dharashiv, Maharashtra, India
2Principal College of Engineering Dharashiv, Maharashtra, India ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract – This project work is based on the LS-DYNA code
that the lightweight armor system is still capable to better ballistic resistance.
which captures the impact phenomenon on a given target material of ceramic, steel/ceramic and ceramic/FRP and projectile system. In this project investigation of projectile mass, the residual velocity of the projectile, plate orientation means their material, properties, width, stress, structure etc., kinetic energy, and sliding energy. To do finite element (FE) simulation to capture impact phenomenon on a given armour plate and projectile system. To develop a high-quality composite sandwich for ballistic protection for target material from the impact of a high-velocity projectile system. This simulation is based on the Johnson-Holmquist model and Johnson-cook model. The ceramic (Alumina 99.5%) and the Fibre-reinforced plastic (FRP) are used. The obtained result is in the form of residual velocity and the energy conversation.
1.1 Theoretical background 1. Methods to solve any engineering problemA. Analytical method Applicable only for simple problems like cantilever & simply supported beams etc. complete in itself B. Numerical method 1. Finite element method (FEM)It is a computational tool for performing engineering analysis. It is helpful for mesh building. It is used for solving a numerical problem most of the times. Application – thermal, linear &non-linear, fatigue and dynamic analysis. 2. Boundary Element Method (BEM) – BEM is an efficient technique to solve Noise, vibration, and harshness (NVH) and acoustics problems. This method considers the only outer boundary of the domain is considered in the problem of volume and for the area problem, it considers only the outer periphery which helps to reduce dimensionality and solve a problem faster. 3. Finite volume method (FVM)FVM assist to solve parabolic, elliptic, or hyperbolic partial differential equations withinside the shape of algebraic equations. The computational fluid dynamics software is based on the finite volume method (FVM). The FVM is based on Navier- stokes equations; it is Energy and Momentum conservation equilibrium equations. 4. Finite Difference method (FDM)This method Taylor’s series is used to solve the differential equation which is converted into algebraic equations. In this conversation, the higher valve is neglected.
Key Words: LS Dyna, Bullet Impact, Composite Material etc.
1. INTRODUCTION Composite armors include numerous fabric layers normally made from metals, composite, ceramics, and different materials intently bonded together. Composite armor has spearheaded a vast innovation within the industry, and although there have been some remarkable milestones, the advancement in ballistic technology requires the need for armor systems with extra extraordinary mechanical and impact performance, decreased weight, and better formability, able to resisting excessive threats. This topic of interest has pioneered the study of advanced sandwich-type composite armors, which are composed of a cocktail of functional materials, consisting of ceramics, metals, and composites, purposefully selected and combined for their impactor tip erosion functionality, energy dissipation properties, light-weight nature, high stiffness, ductility, and higher protective advantage over the conventional protective bulletproof vest, which is usually made from a single layer of fabric, mostly aramid. The aim of this project work is to recognize the design of current sandwich armors and use the findings to create a sandwich composite armor with higher qualities. Since higher and continuous affect resistance are the focus of armor manufacturers, segmented armors are a fantastic manner to improve modern-day armor designs. This studies is targeted on developing segmented sandwich armor with a gradient core mid-section. The gradient core design is to make sure
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C. Explicit method a. In this method the ABAQUS RADIOSS, MS-DYTRAN is the commonly used software. b. The computational speed is very fast as there is no matrix. c. The filtering of the frequencies as no significant
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