Vibration analysis of 3D timoshenko beams subjected to moving vehicles / Shen-Haw Ju in Journal of engineering mechanics, Vol.137 N° 11 (Novembre 2011)  

Public ISBD [article]  inJournal of engineering mechanics > Vol.137 N° 11 (Novembre 2011) . - pp. 713-721 Titre : Vibration analysis of 3D timoshenko beams subjected to moving vehicles Type de document : texte imprimé Auteurs : Shen-Haw Ju, Auteur Année de publication : 2012 Article en page(s) : pp. 713-721 Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Finite element method Beams Modal analysis Railroad trains Vehicles Wheels Résumé : This study solves the three-dimensional (3D) dynamic interaction problem between simply supported Timoshenko beams and vehicles by using theoretical equations. The model includes intermediate supports, so train-rail-soil interaction can be analyzed. The vehicle equations are formed by using a matrix method by the assemblage of spring-dampers and rigid links, and the bridge formulations are decoupled using the modal method. The Newmark method is then used to analyze these vehicle-bridge equations. Variable speed, road irregularities, vehicle eccentricities, and multiple vehicles are considered. The comparison of the beam displacements between the current and finite-element methods indicates that the accuracy of this method is acceptable. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://cedb.asce.org/cgi/WWWdisplay.cgi?285375 [article] Vibration analysis of 3D timoshenko beams subjected to moving vehicles [texte imprimé] / Shen-Haw Ju, Auteur . - 2012 . - pp. 713-721. Mécanique appliquée Langues : Anglais (eng) in Journal of engineering mechanics > Vol.137 N° 11 (Novembre 2011) . - pp. 713-721 Mots-clés : Finite element method Beams Modal analysis Railroad trains Vehicles Wheels Résumé : This study solves the three-dimensional (3D) dynamic interaction problem between simply supported Timoshenko beams and vehicles by using theoretical equations. The model includes intermediate supports, so train-rail-soil interaction can be analyzed. The vehicle equations are formed by using a matrix method by the assemblage of spring-dampers and rigid links, and the bridge formulations are decoupled using the modal method. The Newmark method is then used to analyze these vehicle-bridge equations. Variable speed, road irregularities, vehicle eccentricities, and multiple vehicles are considered. The comparison of the beam displacements between the current and finite-element methods indicates that the accuracy of this method is acceptable. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://cedb.asce.org/cgi/WWWdisplay.cgi?285375

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