Stresses and deformations in cross-ply composite tubes subjected to circumferential temperature gradients

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dc.contributor.authorCooper, David E. (David Edward)en
dc.contributor.committeechairHyer, Michael W.en
dc.contributor.committeememberJohnson, Eric R.en
dc.contributor.committeememberHerakovich, Carl T.en
dc.contributor.departmentEngineering Mechanicsen
dc.date.accessioned2014-03-14T21:49:17Zen
dc.date.adate2012-11-09en
dc.date.available2014-03-14T21:49:17Zen
dc.date.issued1985-07-05en
dc.date.rdate2012-11-09en
dc.date.sdate2012-11-09en
dc.description.abstractThe stresses and deformations in cross-ply composite tubes subjected in circumferential temperature gradients are studied. The motivation behind the study is the anticipated use of composite tubes in space structures where the tube is exposed to the heat of the sun on one side and the cryogenic temperatures of space on the other. Experiments were performed to measure the functional form of the temperature gradient and the displacements. It was found that the form of the temperature gradient, T(Ɵ), can accurately be represented by T(Ɵ) = A + BcosƟ¸ and that the displacement of the tube is parabolic in the axial coordinate. Two types of analytical solutions were developed: an exact elasticity U solution and an approximate solution. The approximate solution includes a linear variation of the material properties with temperature and uses the principle of complementary virtual work in conjunction with a Ritz approximation on the stress field. The elasticity solution predicts that high tensile stresses could crack the matrix. The effect of including temperature-dependent material properties is to reduce the circumferential dependency of the stresses.en
dc.description.degreeMaster of Scienceen
dc.format.extentxvii, 363 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-11092012-040116en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-11092012-040116/en
dc.identifier.urihttp://hdl.handle.net/10919/45556en
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1985.C668.pdfen
dc.relation.isformatofOCLC# 13037522en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1985.C668en
dc.subject.lcshComposite construction -- Testingen
dc.subject.lcshDeformations (Mechanics)en
dc.subject.lcshThermal stressesen
dc.subject.lcshTubes -- Testingen
dc.titleStresses and deformations in cross-ply composite tubes subjected to circumferential temperature gradientsen
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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