Show simple item record

dc.contributor.authorGerhard, Craig Stevenen_US
dc.date.accessioned2014-03-14T21:11:36Z
dc.date.available2014-03-14T21:11:36Z
dc.date.issued1994-06-01en_US
dc.identifier.otheretd-05222007-091415en_US
dc.identifier.urihttp://hdl.handle.net/10919/37898
dc.description.abstractLayerwise finite element analyses of geodesically stiffened cylindrical shells are presented In this work. The layerwise laminate theory of Reddy (LWTR) is developed and adapted to circular cylindrical shells. The Ritz variational method is used to develop an analytical approach for studying the buckling of simply supported geodesically stiffened shells with discrete stiffeners. This method utilizes a Lagrange multiplier technique to attach the stiffeners to the shell. The development of the layerwise shells couples a one-dimensional finite element through the thickness with a Navier solution that satisfies the boundary conditions. The buckling results from the Ritz discrete analytical method are compared with smeared buckling results and with NASA Testbed finite element results. The development of layerwise shell and beam finite elements is presented and these elements are used to perform the displacement field, stress, and first-ply failure analyses. The layerwise shell elements are used to model the shell skin and the layerwise beam elements are used to model the stiffeners. This arrangement allows the beam stiffeners to be assembled directly into the global stiffness matrix. A series of analytical studies are made to compare the response of geodesically stiffened shells as a function of loading, shell geometry, shell radii, shell laminate thickness, stiffener height, and geometric nonlinearity.en_US
dc.format.mediumBTDen_US
dc.publisherVirginia Techen_US
dc.relation.haspartLD5655.V856_1994.G474.pdfen_US
dc.subjectComposite construction.en_US
dc.subjectShells (Engineering)en_US
dc.subject.lccLD5655.V856 1994.G474en_US
dc.titleFinite element analysis of geodesically stiffened cylindrical composite shells using a layerwise theoryen_US
dc.typeDissertationen_US
dc.contributor.departmentEngineering Mechanicsen_US
dc.description.degreePh. D.en_US
thesis.degree.namePh. D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineEngineering Mechanicsen_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-05222007-091415/en_US
dc.contributor.committeecochairGürdal, Zaferen_US
dc.contributor.committeecochairKapania, Rakesh K.en_US
dc.date.sdate2007-05-22en_US
dc.date.rdate2007-05-22
dc.date.adate2007-05-22en_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record