Buckling load variability of cylindrical shells with stochastic imperfections

Stefanou, G; Papadopoulos, V; Papadrakakis, M

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	https://dspace.lib.ntua.gr/xmlui/handle/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