Optimization method for the determination of material parameters in damaged composite structures. (April 2015)

• Record Type: Journal Article
• Authors: Comellas, Ester; Valdez, S. Ivvan; Oller, Sergio; Botello, Salvador
• Is Part Of: Composite structures. Volume 122(2015)
• Page Start: 417
• Page End: 424
• Publication Date: 2015-04
• Subjects: Composites -- Parameter identification -- Inverse method -- Finite element method -- Mixing theory -- Genetic algorithm; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2014.12.014
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: An optimization method to identify the material parameters of composite structures using an inverse method is proposed. This methodology compares experimental results with their numerical reproduction using the finite element method in order to obtain an estimation of the error between the results. This error estimation is then used by an evolutionary optimizer to determine, in an iterative process, the value of the material parameters which result in the best numerical fit. The novelty of the method is in the coupling between the simple genetic algorithm and the mixing theory used to numerically reproduce the composite behavior. The methodology proposed has been validated through a simple example which illustrates the exploitability of the method in relation to the modeling of damaged composite structures.