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Matrix cracking in laminated composites under monotonic and cyclic loadingsAn analytical model based on the internal state variable (ISV) concept and the strain energy method is proposed for characterizing the monotonic and cyclic response of laminated composites containing matrix cracks. A modified constitution is formulated for angle-ply laminates under general in-plane mechanical loading and constant temperature change. A monotonic matrix cracking criterion is developed for predicting the crack density in cross-ply laminates as a function of the applied laminate axial stress. An initial formulation for a cyclic matrix cracking criterion for cross-ply laminates is also discussed. For the monotonic loading case, a number of experimental data and well-known models are compared with the present study for validating the practical applicability of the ISV approach.
Document ID
19920047394
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Allen, David H.
(NASA Langley Research Center Hampton, VA, United States)
Lee, Jong-Won
(Texas A & M University College Station, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Publication Information
Publication: Composites Engineering
Volume: 1
Issue: 5 19
ISSN: 0961-9526
Subject Category
Structural Mechanics
Accession Number
92A30018
Funding Number(s)
CONTRACT_GRANT: NAG1-979
Distribution Limits
Public
Copyright
Other

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