Modelling damage in half-hole pin bearing cross-ply and angle-ply composite laminates

• Type: Article in International Scientific Journal
• Date: 2022

Authors

Zhuang, FJ (Author) Other; Arteiro, A (Author) FEUP; Tavares, RP (Author) Other; Camanho, PP (Author) FEUP; Chen, PH (Author) Other

Journal

Title: Composite Structures

Vol. 300

ISSN: 0263-8223

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Other information

Authenticus ID: P-00X-3Y7

DOI: 10.1016/j.compstruct.2022.116103

Abstract (EN): This paper presents the development and validation of a mesoscale numerical model to predict the bearing failure of composite laminates reinforced by unidirectional continuous fibers, focusing on specimens that show a significant non-linear response prior to failure. Half-hole pin bearing tests were carried out with multiple instrumentation for the comprehensive characterization of the failure process. Three-dimensional finite element models were used for the simulation of plastic deformation and damage of the cross- and angle-ply specimens using fiber-aligned mesh for the composite plies. To consider the non-linear material behavior prior to crack propagation, the constitutive model proposed includes a bi-linear elastoplastic model to represent the non-linear response under longitudinal shear. For the prediction of the peak and post-peak behavior, 3D invariant-based failure criteria and mechanism-based continuum damage models were used for intralaminar damage, together with a discrete cohesive zone model for delamination. Thorough analyses and comparisons of the experimental and numerical results show a good correlation of the bearing strengths and overall deformation, as well as good agreement in terms of damage size and damage shape. Relevant limitations include difficulties in predicting the post-peak plateau stresses and the loading displacements in some configurations, setting the stage for additional future research.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 17