Delamination analysis using cohesive zone model: A discussion on traction-separation law and mixed-mode criteria

de Oliveira, Lucas Amaro; Donadon, Mauricio Vicente

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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.)

Delamination analysis using cohesive zone model: A discussion on traction-separation law and mixed-mode criteria

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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. 228, APR 1 2020.
Web of Science Citations:	0
Abstract
A discussion on cohesive zone model formulation for prediction of interlaminar damage in composite laminates is presented in this paper. The degradation of interlaminar mechanical properties is analysed from a physical point of view. Firstly, the damage evolution is evaluated according to the traction-separation law and it is demonstrated that if a linear elastic unloading/reloading curve is assumed, the softening function must also be linear. Secondly, issues regarding damage onset and fracture criteria in mixed-mode loading are critically addressed and commented. A new set of criteria is proposed, and the limitations of existing criteria are discussed. (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

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