Engineering Mechanics

Proceedings Vol. 27/28 (2022)

ENGINEERING MECHANICS 2022

Copyright © 2022 Institute of Theoretical and Applied Mechanics of the Czech Academy of Sciences, Prague

 

Harant M., Jopek M., Podaný K., Řiháček J.
pages 137 - 140, full text

In this paper the constitutive modeling of mechanical behaviour of aluminium alloy 2024-T3 is presented. This material is often used in automotive, aircraft or aerospace industry. Therefore, to understand the effect of temperature and strain rate on the material properties is crucial. Series of dynamic tests at various strain rates were performed using the Split Hopkinson Pressure Bar. The stress-strain curves have shown moderate strain rate dependence of flow stress. The temperature effect was evaluated using quasi-static compression tests at different temperatures. In this case, the significant thermal softening is observed. Based on these experiments, parameters of the Johnson-Cook material model were determined. A comparative analysis of the numerical simulations and experiments showed a moderate difference between results.

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