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Crack opening stretch in a plate of finite widthThe problem of a uniaxially stressed plate of finite width containing a centrally located damage zone is considered. It is assumed that the flaw may be represented by a part-through crack perpendicular to the plate surface, the net ligaments in the plane of the crack and through-the-thickness narrow strips ahead of the crack ends are fully yielded, and in the yielded sections the material may carry only a constant normal traction with magnitude equal to the yield strength. The problem is solved by neglecting the bending effects and the crack opening stretches at the center and the ends of the crack are obtained. Some applications of the results are indicated by using the concepts of critical crack opening stretch and constant slope plastic instability.
Document ID
19740027195
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Erdogan, F. (Lehigh Univ. Bethlehem, PA, United States)
Bakioglu, M. (Lehigh Univ. Bethlehem, PA, United States)
Date Acquired
September 3, 2013
Publication Date
September 1, 1974
Subject Category
Structural Mechanics
Report/Patent Number
NASA-CR-140583
Accession Number
74N35308
Funding Number(s)
CONTRACT_GRANT: NSF GK-42771X
CONTRACT_GRANT: NGR-39-007-001
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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