Abstract
This Thesis deals with the identification of elastic or elastoplastic mechanical behavior for heterogeneous materials, by using kinematical field measurement, and by minimizing constitutive equation gap functionals, also used in a previous work by G. Geymonat, S. Pagano, and F. Hild dealing with the identification of elastic material properties. The identification method is presented and then applied to various mechanical situations, for simulated or experimental data.<br />The applications performed in this work are related to the identification of heterogeneous elastic properties, the estimation of mechanical energy locally furnished during high cycle fatigue tests, and the identification of heterogeous elastoplastic properties.