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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.)

Elastic properties of unidirectional fiber-reinforced composites using asymptotic homogenization techniques

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Author(s):
de Macedo, Rafael Quelho [1] ; Luiz Ferreira, Rafael Thiago [1] ; Donadon, Mauricio Vicente [1] ; Guedes, Jose Miranda [2]
Total Authors: 4
Affiliation:
[1] ITA, DCTA ITA IEM, BR-12228900 Sao Jose Dos Campos, SP - Brazil
[2] Univ Lisbon, IST, IDMEC IST, P-1049001 Lisbon - Portugal
Total Affiliations: 2
Document type: Journal article
Source: Journal of the Brazilian Society of Mechanical Sciences and Engineering; v. 40, n. 5 MAY 2018.
Web of Science Citations: 4
Abstract

The objective of this work is to use an asymptotic homogenization numerical model to obtain elastic properties of unidirectional fiber-reinforced composites. Square and perfect hexagonal unit cells are employed, and the influence of the fiber volume fraction over the homogenized elastic properties is studied. The effectiveness of the predictions is assessed by comparisons to experimental properties, and also another micromechanical model based on a representative volume element. The composites E-Glass 21xK43 Gevetex (glass fiber)/LY556/HT907/DY063 (epoxy matrix) and AS4 (carbon fiber)/3501-6 (epoxy matrix) were studied and good agreement between experimental and numerical predictions was found. Discrepancies between experimental and numerical data are explained in terms of simplifications considered in the homogenization model. An adjustment of properties here performed, based on varying fiber volume fractions, showed to be effective to physically represent the studied fiber composites in a micromechanical stress model based on asymptotic homogenization, developed to estimate failure envelopes of such materials. (AU)

FAPESP's process: 14/00929-2 - Failure criterion for woven fiber composites built upon asymptotic homogenization techniques
Grantee:Rafael Quelho de Macedo
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 14/26377-6 - Failure criteria for woven fiber composites built upon asymptotic homogenization techniques
Grantee:Rafael Quelho de Macedo
Support Opportunities: Scholarships abroad - Research Internship - Master's degree
FAPESP's process: 15/00159-5 - Hierarchical design of composite materials for production by tridimensional printing
Grantee:Rafael Thiago Luiz Ferreira
Support Opportunities: Regular Research Grants