PHYSICAL AND NUMERICAL DETERMINATION OF WORKABILITY IN ALUMINIUM ALLOYS

Abstract

To prevent any failure or fracture in materials during a forming process, the study of material workability is a crucial task. In this paper, the workability of two different aluminium alloys was described through Cockcroft - Latham ductile fracture criteria and forming limit diagrams. Moreover, the experiments have been carried out using compression tests and finite element methods and there was able to compare and verify the physical and numerical approaches. According to the results, there was found out that physical and numerical models are advantageous tools to describe the material workability during forming processes and the optimal data are obtained when both approaches are working together.

Keywords

• EN AW 6082
• EN AW 7075
• ductile fracture criteria
• forming limit diagram
• compression tests
• FEM