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Stress-intensity factor equations for cracks in three-dimensional finite bodies subjected to tension and bending loadsStress intensity factor equations are presented for an embedded elliptical crack, a semielliptical surface crack, a quarter elliptical corner crack, a semielliptical surface crack along the bore of a circular hole, and a quarter elliptical corner crack at the edge of a circular hole in finite plates. The plates were subjected to either remote tension or bending loads. The stress intensity factors used to develop these equations were obtained from previous three dimensional finite element analyses of these crack configurations. The equations give stress intensity factors as a function of parametric angle, crack depth, crack length, plate thickness, and, where applicable, hole radius. The ratio of crack depth to plate thickness ranged from 0 to 1, the ratio of crack depth to crack length ranged from 0.2 to 2, and the ratio of hole radius to plate thickness ranged from 0.5 to 2. The effects of plate width on stress intensity variation along the crack front were also included.
Document ID
19840015857
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Newman, J. C., Jr.
(NASA Langley Research Center Hampton, VA, United States)
Raju, I. S.
(Vigyan Research Associates Hampton, Va., United States)
Date Acquired
September 4, 2013
Publication Date
April 1, 1984
Subject Category
Structural Mechanics
Report/Patent Number
NASA-TM-85793
NAS 1.15:85793
Accession Number
84N23925
Funding Number(s)
PROJECT: RTOP 505-33-23-02
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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