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Interlaminar stress singularities at a straight free edge in composite laminatesA quasi-three-dimensional finite-element analysis was used to analyze the edge-stress problem in four-ply, composite laminates. The seven laminates that were considered belong to the laminate family where the outer ply angle is between 0 and 90 deg. Systematic convergence studies were made to explore the existence of stress singularities near the free edge. The present analysis appears to confirm the existence of stress singularities at the intersection of the interface and the free edge. The power of the stress singularity was the same for all seven laminates considered.
Document ID
19820027694
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Raju, I. S.
(NASA Langley Research Center; Joint Institute for Advancement of Flight Sciences Hampton, VA, United States)
Crews, J. H., Jr.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1981
Publication Information
Publication: Computers and Structures
Volume: 14
Issue: 1-2,
Subject Category
Structural Mechanics
Accession Number
82A11229
Funding Number(s)
CONTRACT_GRANT: NSG-1449
Distribution Limits
Public
Copyright
Other

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