Novel formulation to study thermal postbuckling of circular plates with edges elastically restrained against rotation / R. Ramgopal Varma in Journal of engineering mechanics, Vol. 137 N° 10 (Octobre 2011)  

Public ISBD [article]  inJournal of engineering mechanics > Vol. 137 N° 10 (Octobre 2011) . - pp.708-711 Titre : Novel formulation to study thermal postbuckling of circular plates with edges elastically restrained against rotation Type de document : texte imprimé Auteurs : R. Ramgopal Varma, Auteur ; G. Venkateswara Rao, Auteur Année de publication : 2012 Article en page(s) : pp.708-711 Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Thermal postbuckling Circular plates Elastic edge rotational restraints Résumé : A novel formulation is used to study the thermal postbuckling behavior of circular plates, with the edges supported to not have lateral deflection and elastically restrained against rotation. The elastic restraint is mathematically represented by an elastic rotational spring. The circular plate is subjected to a uniform edge compressive radial load, developed because of a uniform temperature rise. The formulation is on the basis of on the radial tensile load developed in the plate because of the large deflections of the plate with edges immovable in the plane normal to the edge and the linear buckling load corresponding to the uniform edge radial compressive load. The developed radial tensile load is obtained by using Berger’s approximation. The numerical results obtained from the present investigation in terms of the ratios of the postbuckling to the buckling loads for several rotational spring stiffness values compare well with those obtained by using the versatile finite-element analysis. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.org/emo/resource/1/jenmdt/v137/i10/p708_s1?isAuthorized=no [article] Novel formulation to study thermal postbuckling of circular plates with edges elastically restrained against rotation [texte imprimé] / R. Ramgopal Varma, Auteur ; G. Venkateswara Rao, Auteur . - 2012 . - pp.708-711. Mécanique appliquée Langues : Anglais (eng) in Journal of engineering mechanics > Vol. 137 N° 10 (Octobre 2011) . - pp.708-711 Mots-clés : Thermal postbuckling Circular plates Elastic edge rotational restraints Résumé : A novel formulation is used to study the thermal postbuckling behavior of circular plates, with the edges supported to not have lateral deflection and elastically restrained against rotation. The elastic restraint is mathematically represented by an elastic rotational spring. The circular plate is subjected to a uniform edge compressive radial load, developed because of a uniform temperature rise. The formulation is on the basis of on the radial tensile load developed in the plate because of the large deflections of the plate with edges immovable in the plane normal to the edge and the linear buckling load corresponding to the uniform edge radial compressive load. The developed radial tensile load is obtained by using Berger’s approximation. The numerical results obtained from the present investigation in terms of the ratios of the postbuckling to the buckling loads for several rotational spring stiffness values compare well with those obtained by using the versatile finite-element analysis. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.org/emo/resource/1/jenmdt/v137/i10/p708_s1?isAuthorized=no

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