Modelling intralaminar damage mechanisms in fibre reinforced polymers at finite strains

• Type: Article in International Scientific Journal
• Date: 2023

Authors

Lopes, IAR (Author) FEUP; Danzi, F (Author) Other; Arteiro, A (Author) FEUP; F.M. Andrade Pires (Author) FEUP; Camanho, PP (Author) FEUP

Journal

Title: International Journal of Solids and Structures

Vol. 282

ISSN: 0020-7683

Publisher: Elsevier

Indexing

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Other information

Authenticus ID: P-00Y-VZT

DOI: 10.1016/j.ijsolstr.2023.112449

Abstract (EN): An approach to predict intralaminar failure mechanisms in laminate fibre-reinforced composites, at finite strains, is proposed. Transverse matrix cracking is described by a smeared crack model, activated by an invariant-based failure criterion, where an embedded cohesive crack is considered in the continuum description. A deformation gradient decomposition based on homogenisation considerations is developed for a more objective finite strain kinematic description of transverse cracks. The local equilibrium problem is established in the reference configuration to naturally include re-orientation of the fracture plane, and the employed cohesive law is able to deal with non-monotonic loading. Moreover, a continuum damage model formulated in terms of the Green-Lagrange strain tensor is used for longitudinal failure. The simulation of an open-hole multi-directional specimen subjected to tension illustrates the ability of the proposed constitutive equations to capture experimental observations.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 18