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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A cohesive zone model to predict fatigue-driven delamination in composites

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Author(s):
de Oliveira, Lucas Amaro [1] ; Donadon, Mauricio Vicente [1]
Total Authors: 2
Affiliation:
[1] Aeronaut Inst Technol, Dept Aeronaut, Sao Jose Dos Campos - Brazil
Total Affiliations: 1
Document type: Journal article
Source: ENGINEERING FRACTURE MECHANICS; v. 235, AUG 1 2020.
Web of Science Citations: 0
Abstract

A cohesive zone model is proposed to analyse composite delamination propagation under high-cycle fatigue loading. A new method to compute the strain energy release rate at any point within the element fatigue life cycle range is presented. The proposed scheme is based on the J-integral method evaluated at an estimated position of the crack-tip within the element, instead of the element integration points. Furthermore, a new fatigue damage evolution law is proposed to account for the unwanted quasi-static damage during the element fatigue degradation process. The model prediction capabilities were verified against experimental data available in the literature and theoretical solutions using a double cantilever beam configuration for mode I loading, four-point end-notched flexure configuration for mode II loading, and mixed-mode bending configuration for mixed-mode loading. The simulations were performed at both constant and variable amplitude loading. The numerical predictions obtained using the proposed model correlated very well with literature's experimental data. (AU)

FAPESP's process: 15/16733-2 - Modelling of bonded joints in composite material structures for aeronautic applications
Grantee:Mariano Andrés Arbelo
Support Opportunities: Scholarships in Brazil - Post-Doctoral