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Bearing-bypass loading in composite joints - Testing and stress analysisA combined experimental and analytical study of bearing and bypass loading on single-fastener specimens of a 16-ply, quasi-isotropic T300/5208 graphite/epoxy laminate with a centrally located hole is reported. The specimens were loaded in either tension or compression, and onset damage, ultimate strengths, and corresponding failure modes were determined. The tension data showed the expected linear interaction for combined bearing-bypass loading with damage developing in the net-section tension mode. However, the bearing-onset strengths showed an unexpected interaction of the bearing and compressive bypass loads in which the latter reduced the bearing-onset strength. A linear finite element analysis showed that bearing-bypass loading had a marked influence on the bolt-hole contact which in turn had a significant effect on local stresses.
Document ID
19910032174
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Crews, John H., Jr.
(NASA Langley Research Center Hampton, VA, United States)
Naik, Rajiv A.
(Planning Research Corp. Hampton, VA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1989
Subject Category
Structural Mechanics
Accession Number
91A16797
Distribution Limits
Public
Copyright
Other

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