Simulation and Experimental Tests of Ballistic Impact on Composite Laminate Armor

Ali Murat Soydan,Bahadır Tunaboylu,Recep Akdeniz,Abdul Kadir Sarı,Ahmed Galal Elsabagh

doi:10.1155/2018/4696143

Abstract

This paper presents the experimental testing and simulation results of ballistic impact tests on laminated armor samples that consist of three layers of different materials: fiber-cement, Kevlar fabric, and steel. In experimental tests, a 9 mm FMJ bullet was launched towards a 100 cm2 sample of the armor from the fiber-cement side. Ansys Workbench Explicit Dynamics and Ansys AUTODYN 3D were used to model and simulate the ballistic impact. Experimental testing and simulation results were compared to analyze the behavior of composite armor designs, and a good agreement was observed.

Highlights

According to EN 1063 Ballistic Standards in Table 1, there are different types of projectiles and testing conditions of the ballistic test
HEXION MGS L285 resin impregnated with MGS H160 hardener was used for bonding the materials assembly. e damage in composite laminates at BR2 level ballistic impact with shear wave velocity in the target of 2 mm/μsec is localized within a zone of 3–10 cm near the impact area; samples with 10 cm × 10 cm were found to be sufficient to test the ballistic behavior of the laminate structure [10]. e samples were performed by pressing with 10–20 bar pressure at 60°C for 10 minutes with a hydraulic press
E structure has a targeted special design of fibercement board bonded to a steel plate via Kevlar, and an optimization study was carried out. e composite laminates were produced for add-on armored protection in prefabricated structures or buildings where the fiber-cement layer plays as a front layer which look alike the structure wanted to be protected, Kevlar layer as an aid layer to slow down the bullet, and steel layer to stop the bullet

Summary

Core Type

0.357 magnum 0.44 magnum 7.62 × 39 mm 5.56 × 45 mm 7.62 × 51 mm 5.56 × 45 mm 7.62 × 51 mm. L/RN FJ1/RN/SC FJ1/CB/SC FJ2/FN/SC FJ2/PB/HC1 FJ2/PB/SCP1 FJ1/PB/SC FJ/PB/SC FJ2/PB/HC1. L: lead; CB: conic bullet; FJ: full steel jacket; FN: flat nose bullet; RN: rounded nose bullet; HC1: steel hard core with incendiary; SCP1: soft core with steel penetrator; PB: pointed bullet; SC: soft core. Properties of the materials and material modeling characterizing like the type of elasticity and failure conditions are the most important modeling conditions in ballistic armor simulation process [6, 7]. Commercial software tools like SolidWorks, CATIA V5, and Ansys design modeler are commonly used to model the geometry of both armor and projectile. While tools like ABAQUS, Ansys with LS-DYNA, and AUTODYN 3D are used for material and test modeling [8, 9]. Simulations, as well as experimental tests at BR2 ballistic level, were performed, and results are presented

Experimental Conditions and Results

Hardening constant B exponent n

Bilinear isotropic hardening

Melting temperature C

Conclusion