Un algorith1ne de calcul de structures elastoplastiques pour I 'identification des lois de comportement des materiaux
Keywords:
finite element, identification, elastoplasticity, plane tensile testAbstract
Non homogenous tests are successfully used to identify constitutive models of material behaviour. Finite elements methods can be considered to analyse these tests. This paper presents a finite elements algorithm solving a non-linear elastoplastic problem without use of the well-known tan~ent matrix. Thus the computation of the plastic and elastic part are almost completely uncoupled. The proposed algorithm is well adapted to the identification of constitutive model. As an example, the Lankford coefficient, for a transversal isotropic model, is identified combining the plane tensile test and our algorithm.
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References
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