Comparative Study on the Formability Behaviour of Different Grades of Aluminium Alloys Using Limiting Dome Height Test—An Analytical and Experimental Approach

Abstract

The objective of this present work is to the comparison of simulation and experimental results on the formability behaviour of dissimilar aluminium alloys such as AA6082-O, AA5083-O, AA5052-H32 and AA6082-T6 using limiting dome height (LDH) test. This research work is divided into four main parts. In the first part, experiment is performed on LDH test is used to predict the failure criteria of formability of all aluminium alloys. The experimental dome height values were measured and recorded. In second part, the uniaxial tensile test for all aluminium alloys was performed, and the combined curve of true stress–strain values and force-displacement was drawn. In third part, the simulation of LDH test is performed on simulation using Hyperform software to estimate the forming behaviour of used aluminium alloys. In simulation process, the comparative study of forming limit diagram (FLD), plastic, minor and major strain of used aluminium alloys was studied. With the help of simulation result, the forming limit curves (FLC) were drawn to develop the minor and major strain paths. In last part, the comparison of simulation and experiment result of dome height was prepared when localized necking occurs. It is showed that the simulation results have a good agreement with the experimental result at 93% accuracy for all aluminium alloys. Both the result shows that the AA6082-O has better formability followed by AA6082-T6, AA5083-O and AA5052-H32.