Advances in FEM Simulation of HFQ? AA6082 tailor welded blanks for automotive applications

International Deep Drawing Research Group 37th Annual Conference

Mohamed, Mohamed^1,2 ; Norman, David^1 ; Petre, Aura^1 ; Melotti, Federico^1 ; Szegda, Damian^1

Impression Technologies Limited, Unit e, 46 Sayer Drive, Lyons Park, Coventry

CV5 9PF, United Kingdom^1

Department of Mechanical Engineering, Helwan University, Helwan, Egypt^2

关键词: Automotive applications;    High specific strength;    High strength sheets;    Manufacturing technologies;    Mechanical deformation;    Solution heat treatment;    Tailorwelded blanks (TWBs);    Vehicle weight reductions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/418/1/012036/pdf
DOI  :  10.1088/1757-899X/418/1/012036

来源: IOP

【 摘 要 】

Vehicle weight reduction has been identified as one of the most effective ways of achieving reduced energy consumption and CO2 emissions in the automotive industry. Aluminium has been used as a lightweight replacement to steel in the automotive industries for many years. In addition to the high specific strength, the formability of high-strength sheet aluminium is increased significantly at elevated temperatures. New manufacturing technologies that allow forming of high and ultra-high strength aluminium alloys have emerged recently. One such technology is HFQ®- solution heat treatment, forming and in-die quenching which combines material tempering with mechanical deformation. In this article, firstly, HFQ® Technology is used when forming a uniform thickness blank and, secondly, further benefits are shown when combining the HFQ® technology with friction stir welding. The friction stir welded AA6082 tailor welded blanks (TWBs), with gauge of 2.0-3.0 mm have been prepared and successfully formed into automotive components using the HFQ® process. The recent advances in the FE analysis and the implementation of a novel CDM model in industrial applications of the HFQ® process has been described. This paper presents the use of CDM, integrated into FEA package Pam-Stamp, to accurately predict the forming of an automotive tailor welded cross member panel.