NDLI: Bearing-bypass loading on bolted composite joints

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Bearing-bypass loading on bolted composite joints

Content Provider	NASA Technical Reports Server (NTRS)
Author	Crews Jr., J. H. Naik, R. A.
Copyright Year	1987
Description	The effects of simultaneous bearing and bypass loading on a graphite-epoxy (T300/5208) laminate were investigated. Onset damage and ultimate strengths were determined for each test case. A finite element stress analysis was conducted for each test case. The computed local stresses were used with appropriate failure criteria to analyze the observed failure modes and strengths. An unexpected interaction of the effect of the bypass and bearing loads was found for the onset of compression reacted bearing damage. The interaction was caused by a decrease in the bolt-hole contact arc and a corresponding increase in the severity of the bearing loads. The amount of bolt-hole contact had a significant effect on local stresses and, thus, on the calculated damage-onset and ultimate strengths. An offset-compression failure mode was identified for laminate failure under compression bearing-bypass loading.
File Size	7196624
Page Count	34
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19870016004
Archival Resource Key	ark:/13960/t6j14z058
Language	English
Publisher Date	1987-05-01
Access Restriction	Open
Subject Keyword	Composite Materials Finite Element Method Stresses Cavities Stress Analysis Compression Tests Failure Modes Graphite-epoxy Composites Laminates Damage Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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