Development of Fabric Constitutive Behavior for Use in Modeling Engine Fan Blade-Out Events
Publication: Journal of Aerospace Engineering
Volume 22, Issue 3
Abstract
The development of a robust and reliable material model for fabrics used to prevent fan blade-out events in propulsion engines has significant importance in the design of fan-containment systems. Currently, Kevlar is the only fabric approved by the Federal Aviation Administration to be used in fan-containment systems. However, very little work has been done in building a mechanistic-based material behavior model, especially one that can be used to quantify the behavior of Kevlar when subjected to high-velocity projectiles. Experimental static and high strain rate tensile tests have been conducted at Arizona State University to obtain the material properties of Kevlar fabric. In this paper we discuss the development and verification of a constitutive model for dry fabrics for use in an explicit finite-element program. Results from laboratory tests such as tension tests including high-strain rate tests, picture frame shear tests, and friction tests yield most of the material properties needed to define a constitutive model. The material model is incorporated in the LS-DYNA commercial program as a user-defined subroutine. The validation of the model is carried out by numerically simulating actual ballistic tests conducted at NASA-GRC and fan blade out tests conducted at Honeywell Aerospace (Propulsion Engines).
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Acknowledgments
The writers wish to thank William Emmerling and Donald Altobelli of the Federal Aviation Administration’s Aircraft Catastrophic Failure Prevention Research Program for their support and guidance. Funding for this research effort was provided by the FAA, under Grant No. UNSPECIFIED01-C-AW-ASU.
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Information
Published In
Journal of Aerospace Engineering
Volume 22 • Issue 3 • July 2009
Pages: 249 - 259
Copyright
© 2009 ASCE.
History
Received: Jul 7, 2008
Accepted: Jan 22, 2009
Published online: Jun 15, 2009
Published in print: Jul 2009
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