Show simple item record

dc.contributor.advisorBall, R.E.
dc.contributor.authorFreedman, Robert N.
dc.dateSeptember 1977
dc.date.accessioned2012-11-16T19:16:58Z
dc.date.available2012-11-16T19:16:58Z
dc.date.issued1977-09
dc.identifier.urihttp://hdl.handle.net/10945/18301
dc.description.abstractThe relationship between the bending moment and the through-plane shear force in the vicinity of a mechanical fastener at failure was determined. Experiments were conducted on 4-inch wide flat plate aluminum and graphite-epoxy composite specimens that modeled portions of a wing skin along a spar and along a rib. The composite specimens were either 8-ply or 16-ply balanced layups and were simply supported at two opposing edges and free along the other two edges. The fasteners were pulled normal to the plates, and the maximum force at failure was measured for specimen lengths varying from two to six inches between supports. The aluminum plates failed by formation of a plastic hinge across their width and showed little sensitivity to through-plane shear. The 8-ply spar specimens cracked across their width and also were relatively insensitive to through-plane shear. However, failures of the rib specimens were confined to a region near the fastener, where the fastener pulled through the plate, and showed much greater sensitivity to through-plane shear. Two analyses were made; one for small elastic deflections of a thin orthotropic plate, and another for a beam in the elastic range. A mesh generator for a finite element model of the plate around the fastener was also developed for the computer program ADINA.en_US
dc.description.urihttp://archive.org/details/astudyofpullthro1094518301
dc.language.isoen_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.subject.lcshAeronauticsen_US
dc.titleA study of pull-through failures of mechanically fastened joints.en_US
dc.typeThesisen_US
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.contributor.departmentAeronautics
dc.subject.authorthrough-plane shearen_US
dc.subject.authorjoint failuresen_US
dc.subject.authorfastener pull-throughen_US
dc.subject.authorcomposite platesen_US
dc.description.serviceLieutenant, United States Navyen_US
etd.thesisdegree.nameM.S. in Aeronautical Engineeringen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineAeronautical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record