A mixed numerical-experimental methodology for determining the elastic constants of orthotropic materials

Luigi Bruno; Giuseppina Felice; Leonardo Pagnotta; Andrea Poggialini

doi:10.1117/12.695286

15 September 2006 A mixed numerical-experimental methodology for determining the elastic constants of orthotropic materials

Luigi Bruno, Giuseppina Felice, Leonardo Pagnotta, Andrea Poggialini

Author Affiliations +

Proceedings Volume 6341, Speckle06: Speckles, From Grains to Flowers; 63410J (2006) https://doi.org/10.1117/12.695286
Event: Speckle06: Speckles, From Grains to Flowers, 2006, Nimes, France

Abstract

The present paper describes a hybrid method which combines finite element analyses and genetic algorithms (GAs) for determining the elastic properties of isotropic and anisotropic materials from the full-field measurement of the displacements of plates under flexural loads. An optimized procedure based on GAs updates iteratively the elastic constants in a numerical model until the displacements obtained by numerical analysis fit the experimental data. The unknown parameters are identified simultaneously by a single test and without damaging the structure. The procedure was applied to both isotropic (aluminum) and anisotropic (Graphite/PEEK unidirectional laminate) specimens.

Citation Download Citation

Luigi Bruno, Giuseppina Felice, Leonardo Pagnotta, and Andrea Poggialini "A mixed numerical-experimental methodology for determining the elastic constants of orthotropic materials", Proc. SPIE 6341, Speckle06: Speckles, From Grains to Flowers, 63410J (15 September 2006); https://doi.org/10.1117/12.695286

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