Experimental and Numerical Simulation to Validate Critical Perforation Velocity on a Flat Plate Aluminium Alloy 6061

Abstract

Aluminium 6061 (Al6061) alloy, which is known as commercial alloy, is massively used in aviation and automobile industries. Therefore, research on Al6061 alloy is gaining significance among scientists and researchers all over the world as it provides light weight, high strength and stiffness, high impact, and corrosion resistance in engineering applications. The comprehensive analysis of mechanical behavior under large stress-strain deformation responses of the alloy is studied over a wide range of strain-rates such as 1 × 10−3 s−1, 1 × 103 s−1, 2 × 103 s−1, and 3 × 103 s−1 under room temperature to elevated temperatures of 100°C and 200°C. In this regard, this study aims to evaluate the Johnson–Cook strength and fracture constants utilizing the Johnson–Cook constitutive model equations. Furthermore, the evaluated constant parameters have been used to perform numerical simulation analysis utilizing ABAQUS/CAE software. According to the study’s findings, the critical perforation velocity was found to be 70 ms−1 when a flat-nosed bullet (45 mm length and 12 mm diameter) made of stainless steel weighing 50 grams was fired normally to the center of a square plate specimen of Al6061 alloy. The specimen of the square flat plate was prepared with side 205 mm and 2 mm thickness (205 × 205 × 2 mm3). A good correlation for critical perforation velocity of experimental acquisition data and numerical simulation results has been found. These findings increase the knowledge of the material’s response application to the high-velocity impact that can be used in arms-ammunition, aviation, marine, automobile, and home appliances.

Oblique penetration performance of Explosively Formed Projectile (EFP) on 6061 aluminum target:experiments and simulations

“…Moreover, its dynamic characteristics under the impact of high-speed kinetic energy-penetration bodies have attracted the attention of scholars. Yadav (2022) penetrated 6061 aluminum target plates with stainless-steel flat head projectiles and confirmed that the 6061 aluminum alloy has high strength, stiffness, and impact resistance. Li (2002) carried out experiments to strengthen the resistance of 6061 aluminum composite materials and 6061 aluminum alloy materials to ultra-high-speed projectile impacts and performed microscopic analysis on the fracture morphology of the spalling zone along the crater edge in the target using scanning electron microscopy (SEM).…”

Stress Distribution Analysis using ANSYS of the Nose Landing Gear of STOL Aircrafts Considering Runway Gradient: A Simulation Study

“…To ensure accuracy, FEA solutions were given the right kind and quantity of mesh for each individual part (Yadav et al, 2022). Table 3 summarizes the various element types utilized in meshing structure.…”

“…The finite element software ANSYS was utilized for numerical simulations were carried using real material similar with manufacturer of Twin-Otter (DHC-6) Landing Gear under real loading condition felt during landing such as corresponding bead pressure, pneumatic pressure, and loading stress distribution conditions of the aircraft which has been presented in above Table 3. Aluminium provides high corrosion resistance while maintaining structural integrity to support the aircraft (Yadav et al, 2022). The materials selected are shown in Table 4 and comply with the standard specifications supplied by the manufacturers.…”