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Energy absorption in composite materials for crashworthy structuresCrash energy-absorption processes in composite materials have been studied as part of a research program aimed at the development of energy absorbing subfloor beams for crashworthy military helicopters. Based on extensive tests on glass/epoxy, graphite/epoxy, and Kevlar/epoxy composites, it is shown that the energy-absorption characteristics and crushing modes of composite beams are similar to those exhibited by tubular specimens of similar material and architecture. The crushing mechanisms have been determined and related to the mechanical properties of the constituent materials and specimen architecture. A simple and accurate method for predicting the energy-absorption capability of composite beams has been developed.
Document ID
19880049696
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Farley, Gary L.
(NASA Langley Research Center; U.S. Army, Aerostructures Directorate, Hampton VA, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Subject Category
Structural Mechanics
Meeting Information
Meeting: nternational Conference on Composite Materials
Location: London
Country: United Kingdom
Start Date: July 20, 1987
End Date: July 24, 1987
Accession Number
88A36923
Distribution Limits
Public
Copyright
Other

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