Behaviour of Al6061-T6 alloy at different temperatures and strain-rates_ Experimental characterization and material modelling

Behaviour of Al6061-T6 alloy at different temperatures and strain-rates_ Experimental characterization and material modelling – Ebook PDF Instant Download/Delivery

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• Author: M. Scapin & A. Manes

Extreme loading conditions like ballistic impacts, explosions and several technological processes subject the material involved to a very high strain-rate combined with high levels of deformation, temperature and damage. These loading conditions represent a challenge in the design and assessment of critical mechanical components and/or manufacturing process. Although experimental testing is fundamental for a reliable approach, alternative methods such as numerical simulations are now an actual and valid option. Obviously, the reliability of the Finite Element models results strongly depends on the capability of the material model to correctly reproduce the material behaviour under these extreme conditions. In such complex scenarios, different aspects have therefore to be considered: the generation and propagation of elastic and plastic waves, the contribution of deviatoric and hydrodynamic deformation, the thermo-mechanical coupling effects, crack propagation and the failure condition. In addiction the deformation process is adiabatic: the heat generated from the conversion of the plastic work has no time to disperse and the consequent relevant rise in temperature has to be considered.

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