Gelin, Jean-Claude; Ghouati, Omar An inverse identification method of material parameters for nonlinear behaviour. (Une méthode d’identification inverse des paramètres matériels pour les comportements non-linéaires.) (French) Zbl 0924.73072 Rev. Eur. Élém. Finis 4, No. 4, 463-485 (1995). Summary: The characterization of rheological behaviour of materials in nonlinear range is based on experimental tests, characterized by non-homogeneous stress and strain states, making the direct identification very difficult to perform. In this paper, an inverse identification method is proposed to avoid the problems raised by the interpretation of the experimental tests and to determine more accurately material parameters. The algorithm developed consists of an optimization method and a finite element method. This algorithm is first tested by the determination of material parameters in the case of the nonlinear elastic behaviour of polymers, then applied to the inverse identification of viscoplastic parameters of an aluminium alloy. Cited in 1 Document MSC: 74C99 Plastic materials, materials of stress-rate and internal-variable type 74S05 Finite element methods applied to problems in solid mechanics Keywords:nonlinear behaviour; material parameters; inverse identification; optimization; finite elements PDFBibTeX XMLCite \textit{J.-C. Gelin} and \textit{O. Ghouati}, Rev. Eur. Élém. Finis 4, No. 4, 463--485 (1995; Zbl 0924.73072) Full Text: DOI