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Nonlinear analysis for the response and failure of compression- loaded angle-ply laminates with a hole

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dc.contributor.authorMathison, Steve Richarden
dc.contributor.committeechairHerakovich, Carl T.en
dc.contributor.committeechairReddy, Junuthula N.en
dc.contributor.committeememberPindera, Marek-Jerzyen
dc.contributor.departmentEngineering Mechanicsen
dc.date.accessioned2014-03-14T21:50:00Zen
dc.date.adate2012-11-17en
dc.date.available2014-03-14T21:50:00Zen
dc.date.issued1987-05-05en
dc.date.rdate2017-11-17en
dc.date.sdate2012-11-17en
dc.description.abstractThe objective of this study was to determine the effect of nonlinear material behavior on the response and failure of unnotched and notched angle-ply laminates under uniaxial compressive loading. The endochronic theory was chosen as the constitutive theory to model the AS4/3502 graphite-epoxy material system. Three-dimensional finite element analysis incorporating the endochronic theory was used to determine the stresses and strains in the laminates. An incremental/iterative initial strain algorithm was used in the finite element program. To increase computational efficiency, a 180° rotational symmetry relationship was utilized and the finite element program was vectorized to run on a super computer. Laminate response was compared to experiment revealing excellent agreement for both the unnotched and notched angle-ply laminates. Predicted stresses in the region of the hole were examined and are presented, comparing linear elastic analysis to the inelastic endochronic theory analysis. A failure analysis of the unnotched and notched laminates was performed using the quadratic tensor polynomial. Predicted fracture loads compared well with experiment for the unnotched laminates, but were very conservative in comparison with experiments for the notched laminates.en
dc.description.degreeMaster of Scienceen
dc.format.extentxii, 225 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-11172012-040340en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-11172012-040340/en
dc.identifier.urihttp://hdl.handle.net/10919/45819en
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1987.M37.pdfen
dc.relation.isformatofOCLC# 16736436en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1987.M37en
dc.subject.lcshComposite materialsen
dc.subject.lcshFinite element methoden
dc.subject.lcshLaminated materialsen
dc.titleNonlinear analysis for the response and failure of compression- loaded angle-ply laminates with a holeen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineEngineering Mechanicsen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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