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Fracture of composites using singular finite elementsSix noded quarter point natural isoparametric triangular elements are employed to obtain displacement and stress distributions around the crack tip in unidirectional graphite epoxy. The performance of the quarter point element for predicting crack growth direction in unidirectional composite materials is studied for different loading conditions and fiber orientations. The finite element results are compared to analytical solutions of anisotropic elasticity where available. Notched Iosipescu shear specimens are analyzed to study fracture behavior under shear loading. Two methods for determining stress intensity factors are presented.
Document ID
19880029720
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Choksi, G. N. (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Herakovich, C. T. (Virginia Polytechnic Institute and State University Blacksburg, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Subject Category
Composite Materials
Meeting Information
Meeting: Numerical methods in fracture mechanics
Location: San Antonio, TX
Country: United States
Start Date: March 23, 1987
End Date: March 27, 1987
Sponsors: U. S. Navy and Southwest Research
Accession Number
88A16947
Funding Number(s)
CONTRACT_GRANT: NAG1-343
Distribution Limits
Public
Copyright
Other

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