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Buckling load variability of cylindrical shells with stochastic imperfections

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dc.contributor.author Stefanou, G en
dc.contributor.author Papadopoulos, V en
dc.contributor.author Papadrakakis, M en
dc.date.accessioned 2014-03-01T02:01:47Z
dc.date.available 2014-03-01T02:01:47Z
dc.date.issued 2011 en
dc.identifier.issn 1479389X en
dc.identifier.uri http://hdl.handle.net/123456789/29251
dc.subject Buckling load en
dc.subject Non-Gaussian stochastic fields en
dc.subject Random imperfections en
dc.subject Spectral representation en
dc.subject Stochastic finite element en
dc.subject.other Buckling loads en
dc.subject.other Non-Gaussian stochastic fields en
dc.subject.other Random imperfections en
dc.subject.other Spectral representations en
dc.subject.other Stochastic finite elements en
dc.subject.other Computational mechanics en
dc.subject.other Cylinders (shapes) en
dc.subject.other Elastic moduli en
dc.subject.other Gaussian distribution en
dc.subject.other Gaussian noise (electronic) en
dc.subject.other Geometry en
dc.subject.other Probability density function en
dc.subject.other Sensitivity analysis en
dc.subject.other Shells (structures) en
dc.subject.other Spectral density en
dc.subject.other Stochastic systems en
dc.subject.other Buckling en
dc.title Buckling load variability of cylindrical shells with stochastic imperfections en
heal.type journalArticle en
heal.identifier.primary 10.1504/IJRS.2011.039303 en
heal.identifier.secondary http://dx.doi.org/10.1504/IJRS.2011.039303 en
heal.publicationDate 2011 en
heal.abstract In this paper, the effect of random initial geometric, material and thickness imperfections on the buckling load of isotropic cylindrical shells is investigated. To this purpose, a stochastic spatial variability of the elastic modulus as well as of the thickness of the shell is introduced in addition to the random initial geometric deviations of the shell structure from its perfect geometry. The modulus of elasticity and the shell thickness are described by two-dimensional univariate (2D-1V) homogeneous non-Gaussian translation stochastic fields. The initial geometric imperfections are described as a 2D-1V homogeneous Gaussian stochastic field. A numerical example is presented examining the influence of the non-Gaussian assumption on the variability of the buckling load. In addition, useful conclusions are derived concerning the effect of the various marginal probability density functions as well as of the spectral densities of the involved stochastic fields on the buckling behaviour of shells, as a result of a detailed sensitivity analysis. Copyright © 2011 Inderscience Enterprises Ltd. en
heal.journalName International Journal of Reliability and Safety en
dc.identifier.doi 10.1504/IJRS.2011.039303 en
dc.identifier.volume 5 en
dc.identifier.issue 2 en
dc.identifier.spage 191 en
dc.identifier.epage 208 en


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