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Static stability formulas of a weakened timoshenko column / David G. Zapata-Medina in Journal of engineering mechanics, Vol. 136 N° 12 (Décembre 2010) 

Public ISBD [article]  in Journal of engineering mechanics > Vol. 136 N° 12 (Décembre 2010) . - pp.1528-1536 Titre : Static stability formulas of a weakened timoshenko column : effects of shear deformations Type de document : texte imprimé Auteurs : David G. Zapata-Medina, Auteur ; Luis G. Arboleda-Monsalve, Auteur ; J. Dario Aristizabal-Ochoa, Auteur Année de publication : 2011 Article en page(s) : pp.1528-1536 Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Columns  Cracking  Structural  stability  Buckling  Shear  deformation. Résumé : The static stability analysis of two-dimensional Timoshenko columns weakened at an arbitrary section is derived in a classic manner. The effects of shear deformations along the column, influenced by the additional shear force induced by the applied axial load as the member deforms according to the modified shear equation proposed by Haringx, are presented and studied in detail. The proposed model also captures: (1) the influence on the buckling load capacity of the column when an arbitrary weakened section is formed at any location; (2) the tension buckling phenomenon due to the low shear stiffness of columns made of composite materials or elastomeric rubbers; and (3) the beneficial effects of an additional lateral bracing located at the weakened section to alleviate the buckling load reduction of the column. Seven classical and nonclassical cases of columns mostly used in civil and mechanical engineering are summarized in condensed formulas which allow the straightforward determination of buckling loads and shapes. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.org/emo/resource/1/jenmdt/v136/i12/p1528_s1?isAuthorized=no [article] Static stability formulas of a weakened timoshenko column : effects of shear deformations [texte imprimé] / David G. Zapata-Medina, Auteur ; Luis G. Arboleda-Monsalve, Auteur ; J. Dario Aristizabal-Ochoa, Auteur . - 2011 . - pp.1528-1536. Mécanique appliquée Langues : Anglais (eng) in Journal of engineering mechanics > Vol. 136 N° 12 (Décembre 2010) . - pp.1528-1536 Mots-clés : Columns  Cracking  Structural  stability  Buckling  Shear  deformation. Résumé : The static stability analysis of two-dimensional Timoshenko columns weakened at an arbitrary section is derived in a classic manner. The effects of shear deformations along the column, influenced by the additional shear force induced by the applied axial load as the member deforms according to the modified shear equation proposed by Haringx, are presented and studied in detail. The proposed model also captures: (1) the influence on the buckling load capacity of the column when an arbitrary weakened section is formed at any location; (2) the tension buckling phenomenon due to the low shear stiffness of columns made of composite materials or elastomeric rubbers; and (3) the beneficial effects of an additional lateral bracing located at the weakened section to alleviate the buckling load reduction of the column. Seven classical and nonclassical cases of columns mostly used in civil and mechanical engineering are summarized in condensed formulas which allow the straightforward determination of buckling loads and shapes. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.org/emo/resource/1/jenmdt/v136/i12/p1528_s1?isAuthorized=no