Comparison of Measurement of Aluminium Alloy in High Strain Rate

Abstract

This article describes the Split Hopkinson Pressure Bar test of aluminium alloy EN AW 7075-T6. This test is used for material testing at a high strain rate. Two approaches in measurement. In the first case was used one size of specimen and different initial pressure. In the second case was set one initial pressure and three different lengths of specimen. Based on measured data, constants of Johnson-Cook material model for FEM analysis were found.

Keywords

• split hopkinson pressure bar
• aluminium alloy 7075
• dynamic behaviour
• high strain rate
• finite element analyses
• johnson-cook material model