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Analysis of surface cracks at hole by a 3-D weight function method with stresses from finite element methodParallel with the work in Part-1, stress intensity factors for semi-elliptical surface cracks emanating from a circular hole are determined. The 3-D weight function method with the 3D finite element solutions for the uncracked stress distribution as in Part-1 is used for the analysis. Two different loading conditions, i.e. remote tension and wedge loading, are considered for a wide range in geometrical parameters. Both single and double surface cracks are studied and compared with other solutions available in the literature. Typical crack opening displacements are also provided.
Document ID
19960002979
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Zhao, W. (South Carolina Univ. Columbia, SC., United States)
Newman, J. C., Jr. (NASA Langley Research Center Hampton, VA, United States)
Sutton, M. A. (South Carolina Univ. Columbia, SC., United States)
Shivakumar, K. N. (North Carolina Agricultural and Technical State Univ. Greensboro, NC., United States)
Wu, X. R. (Institute of Aeronautical Materials Beijing, China)
Date Acquired
September 6, 2013
Publication Date
July 1, 1995
Subject Category
Composite Materials
Report/Patent Number
NASA-TM-110145
NAS 1.15:110145
Report Number: NASA-TM-110145
Report Number: NAS 1.15:110145
Accession Number
96N12988
Funding Number(s)
PROJECT: RTOP 538-02-10-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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