Effect of Side Groove Shapes on Shear Lips Formation of Aluminium Alloy 6061 using Finite Element Analysis

Abstract

Aluminium alloy 6061 is known for its superior mechanical characteristics, which include lighter weight properties, high specific strength,and simple fabrication. Hence, they are widely used to reduce the weight of vehicles as structural parts. Aluminium alloy 6061 issubjected to high velocity and various forces in the courseofan accident. Hence, understanding the impact properties of aluminium alloys is critical. The impact of side groove shapes on the shear lip development of aluminium alloy 6061 was examined in this work. The shapes of the side groove in this study are V-shape, U-shape,and square-shape. By simulation using Abaqus software, the Charpy impact test was conducted todetermine the shear lips ratio, energy absorbed, displacement and force. It was found that the V-shape side groove shape has the lowest absorb energy as compared to the U-shape and square-shape. The low absorbed energy indicates that the behaviourof the sample test is in a fast-moving brittle fracture. Furthermore, it can be observed that the shear lips for V-shape and square-shape have the lowest ratio of shear lips compared to the U-shape of the side groove. The lower a material's shear lips ratio, the more likely it is to become brittle. In conclusion, when the shear lips ratio is low, it will tend to be low ductility of aluminium alloy 6061, the energy absorbed is low, and the impact of the force is also low.