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Three-dimensional finite element progressive failure analysis of composite laminates under axial extensionA three-dimensional (3D) progressive failure algorithm is developed, where the layerwise laminate theory (LWLT) of Reddy is used for kinematic description. The finite element model based on the layerwise theory predicts both inplane and interlaminar stresses with the same accuracy as that of a conventional 3D finite element model and provides a convenient format for modeling the 3D stress fields in composite laminates. A parametric study is conducted to investigate the effect of out-of-plane material properties, 3D stiffness reduction methods, and boundary conditions on the failure loads and strains of a composite laminate under axial extension. The results indicate that different parameters have a different degree of influence on the failure loads and strains. The predictive ability of various phenomenological failure criteria is evaluated in the light of experimental results available in the literature, and the predictions of the LWLT are compared with those of the first-order shear deformation theory. It is concluded that a 3D stress analysis is necessary to predict accurately the failure behavior of composite laminates.
Document ID
19930065234
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Reddy, Yeruva S.
(Virginia Polytechnic Inst. and State Univ. Blacksburg, United States)
Reddy, Junuthula N.
(Texas A & M Univ. College Station, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Publication Information
Publication: Journal of Composites Technology & Research
Volume: 15
Issue: 2
ISSN: 0885-6804
Subject Category
Structural Mechanics
Accession Number
93A49231
Funding Number(s)
CONTRACT_GRANT: NAG1-1085
Distribution Limits
Public
Copyright
Other

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