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Article dans une revue
Evidence of microstructure evolution in solid elastic media based on a power law analysis
Abstract : Complex and consolidated granular media or microcracked composites and metals usually exhibit a high level of nonlinearity in their elastic response already at low amplitudes of excitation. To quantify it, a proper nonlinear indicator y is introduced and its dependence on the excitation amplitude x is studied. The dependence of y on x is found in experiments to be a power law. Here we show that the different power law exponents measured for different materials could be predicted by proper classes of discrete models. An application is presented to link the exponent evolution and the changes of the microstructure due to the progression of damage mechanically induced.
https://hal-univ-lemans.archives-ouvertes.fr/hal-02989214
Contributeur : Mourad Bentahar Connectez-vous pour contacter le contributeur
Soumis le : jeudi 5 novembre 2020 - 09:48:22
Dernière modification le : mardi 30 novembre 2021 - 14:32:03
Contributeur : Mourad Bentahar Connectez-vous pour contacter le contributeur
Soumis le : jeudi 5 novembre 2020 - 09:48:22
Dernière modification le : mardi 30 novembre 2021 - 14:32:03