Title: A new progressive failure analyses model: development, implementation, parametric study and validation

Authors: Marcus V. Angelo; Jean Paul Charles; Volnei Tita

Addresses: Helicópteros do Brasil, Helibras, Itajubá, Brazil; Department of Aeronautical Engineering, Engineering School of São Carlos, University of São Paulo, São Carlos, Brazil ' Laboratoire de Mécanique et d'Acoustique, Aix-Marseille Université, France ' Department of Aeronautical Engineering, Engineering School of São Carlos, University of São Paulo, São Carlos, Brazil

Abstract: A model for composite failure analysis was developed based on the theory of action plane of failure. A Weibull curve jointly with a non-local criterion was used to model fibre failure. Routines were implemented in finite element code and an extensive parametric evaluation, which included identification and sensibility analysis, was performed from the results of elementary coupons. Key parameters and their influence over the response are presented. Finally, the model was validated against experimental data obtained from the tests performed on large composite plates presenting stress concentrator and consistent results were obtained for both structures analysed (notched and circular hole).

Keywords: progressive failure analysis; PFA; damage propagation; finite element analysis; FEA; composite structures; Weibull curve; non-local criterion; composites; modelling; fibre failure; composite plates; stress concentrator; failure behaviour; residual strength.

DOI: 10.1504/IJAUTOC.2015.070567

International Journal of Automotive Composites, 2015 Vol.1 No.2/3, pp.223 - 243

Received: 14 Aug 2014
Accepted: 02 Dec 2014
Published online: 10 Jul 2015 *

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