Mesomechanical Model for Numerical Study of Two-Dimensional Triaxially Braided Composite
Publication: Journal of Engineering Mechanics
Volume 136, Issue 11
Abstract
A mesoscale three-dimensional finite-element model is set up to model two-dimensional triaxially braided composites. Unit cell scheme is used to take into account braiding architecture as well as mechanical behavior of fiber tows, matrix, and fiber tow interface. A braiding configuration has been studied. A failure criterion and progressive damage evolution model taking into account fiber tow and tow interface has been applied to theoretically predict interlaminar and intralaminar failure mode. Straight-sided specimen testing has been carried out in both axial and transverse direction. Results obtained in the tests as well as finite-element approaches are discussed. This paper also discusses the main feature of the model through an extensive parameter study. Overall, by comparison of experiment and model results, the applicability of the developed model is assessed and the failure process is investigated; furthermore, conducted parameter study enhances the strength of the model, which lies in the correlation of model parameters and identification of damage modes with experimental data on the overall stress strain curves.
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Acknowledgments
The writers acknowledge the support of the National Aeronautics and Space Administration and associated Glenn Research Center, Grant No. UNSPECIFIEDNNX07AV60A, and technical monitor Mr. Dale Hopkins.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 136 • Issue 11 • November 2010
Pages: 1366 - 1379
Copyright
© 2010 ASCE.
History
Received: Oct 26, 2009
Accepted: Apr 7, 2010
Published online: Apr 20, 2010
Published in print: Nov 2010
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