Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Intraply failure criterion for unidirectional fiber reinforced composites by means of asymptotic homogenization

Full text
Author(s):
de Macedo, Rafael Quelho ; Luiz Ferreira, Rafael Thiago ; Guedes, Jose Miranda ; Donadon, Mauricio Vicente
Total Authors: 4
Document type: Journal article
Source: COMPOSITE STRUCTURES; v. 159, p. 335-349, JAN 1 2017.
Web of Science Citations: 5
Abstract

This work focuses on the determination of failure envelopes of unidirectional fiber reinforced composites. A two scale analysis is considered and the mathematical theory of asymptotic homogenization is applied to model the problem. For a given stress applied to the macro level, it is possible to assess stresses at the micro level domain. Three regions of the micro level are considered: matrix, fiber and the interface between them, and each region is ruled by its own failure criterion. A methodology to determine failure of composites using the homogenization is proposed. In the methodology, the strengths of the composite are used to determine the strengths of the constituents: a curve fitting adjustment is applied to calculate the strengths of the matrix and an analytical procedure is used to obtain the strengths of the fiber and interface. Then, the strengths of the constituents are used to evaluate failure criteria at the micro level, and the numerical failure envelopes are built. The advantage of the proposed methodology is that it is capable of calculating numerical failure envelopes with good approximation to experimental envelopes and also to the Puck \& Schurmann criteri, requiring only five unidirectional strengths of the composite as inputs. (C) 2016 Elsevier Ltd. All rights reserved. (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