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Article Dans Une Revue Communications in Nonlinear Science and Numerical Simulation Année : 2015

Evidence of microstructure evolution in solid elastic media based on a power law analysis

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Résumé

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.
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hal-02989214 , version 1 (05-11-2020)

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Marco Scalerandi, S. Idjimarene, Mourad Bentahar, Rachid El Guerjouma. Evidence of microstructure evolution in solid elastic media based on a power law analysis. Communications in Nonlinear Science and Numerical Simulation, 2015, 22 (1-3), pp.334-347. ⟨10.1016/j.cnsns.2014.09.007⟩. ⟨hal-02989214⟩
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