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Formulation de déformation représentative et de vitesse de déformation représentative par indentation sphérique

Abstract : One concept among many others used to exploit instrumented indentation test is the representative strain. In this work, numerical analysis was performed in order to extend the concept of representative strain to a representative strain rate for an elastic-visco-plastic material. It is shown that the proportionality with the ratio is no longer verified, in contrast to conical indentation. Moreover, using inverse analysis with two indentation curves defined by two penetration rates is accurately sufficient to determine properly the reference parameters in the case of a pseudo-numerical material.
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Submitted on : Friday, July 22, 2016 - 10:13:13 AM
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Liva Rabemananjara, Gerard Mauvoisin, Xavier Hernot, Adinel Gavrus, Jean Marc Collin. Formulation de déformation représentative et de vitesse de déformation représentative par indentation sphérique. Matériaux & Techniques, EDP Sciences, 2015, 103 (6), pp.602. ⟨10.1051/mattech/2015039⟩. ⟨hal-01302343⟩

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