Experimental and Applied Mechanics, Volume 4 pp 221-228
Modified Constitutive Relation Error Strategy for Elastic Properties Identification
- Cite this paper as:
- Azzouna M.B., Feissel P., Villon P. (2013) Modified Constitutive Relation Error Strategy for Elastic Properties Identification. In: Ventura C., Crone W., Furlong C. (eds) Experimental and Applied Mechanics, Volume 4. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY
The aim of this paper is to present an inverse approach dedicated to the exploitation of full-field measurements, to identify elastic properties of heterogeneous materials, such as composites. The method is based on the modified constitutive relation error principle and could be split in two steps. The first one consists in defining mechanical fields from the available theoretical and experimental data, for a fixed set of mechanical parameters, by the minimization of a criterion allowing a compromise between constitutive equation and measurements adequacy. The second step takes the form of minimizing a cost function defined by using these fields, to identify the sought material properties. Moreover, the robustness of the method was tested on some numerical examples where white Gaussian perturbations were added to displacement values to simulate an experimental errors.