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Article Dans Une Revue International Journal of Impact Engineering Année : 2011

Determining the stress-strain behaviour at large strains from high strain rate tensile and shear experiments

Résumé

To characterise the high strain rate mechanical behaviour of metals, split Hopkinson bar experiments are frequently used. These experiments basically yield the force and elongation history of the specimen, reflecting not only the specimen material behaviour but also the specimen structural behaviour. Calculation of the real material behaviour from this global response is not straightforward, certainly for materials such as Ti6Al4V where due to low strain hardening, the specimen deformation is very inhomogeneous. However, for fundamental material research and constitutive material modelling, knowledge of the true effective stress versus plastic strain, strain rate and temperature is essential.
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Dates et versions

hal-00816798 , version 1 (23-04-2013)

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J. Peirs, P. Verleysen, W. van Paepegem, J. Degrieck. Determining the stress-strain behaviour at large strains from high strain rate tensile and shear experiments. International Journal of Impact Engineering, 2011, ⟨10.1016/j.ijimpeng.2011.01.004⟩. ⟨hal-00816798⟩

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