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Dynamics of structures including fluid interaction / Abdelkrim Chelghoum 

Public ISBD Titre : Dynamics of structures including fluid interaction Type de document : texte imprimé Auteurs : Abdelkrim Chelghoum, Auteur ; Patrick Dowling, Directeur de thèse ; John Harding, Directeur de thèse Editeur : University of London Année de publication : 1986 Importance : 268 f. Présentation : ill. Format : 27 cm. Note générale : Thèse de Doctorat : Génie Civil : Londres, Université de Londres : 1986 Bibliogr. f. 270 - 299 . Annexe f. 301 - 324 Langues : Anglais (eng) Mots-clés : Dynamics  of  structures Fluid-structure  systems Vibration  analysis Seismic  analysis Finite  element  method Non-linear  dynamic  methods Finite  element  method Non-linear Index. décimale : D002686 Résumé : This thesis investigates the non-linear behaviour of fluid-structure systems with particular emphasis on the vibration and seismic analysis of ground-supported cylindrical liquid filled shells. A numerical approach based mainly on the finite element has been formulated. Three main developments are reported: 1/ Formulation and implementation of non-linear dynamic methods. The derived finite element incremental equations of motion have been solved by a combined "time integration-iterative scheme" approach. Both implicit and explicit temporal integration methods have been used. In the former approach, the Newmark's and Wilson's schemes have been reviewed and implemented. In the latter, the central difference operator was selected. Non-linear iterative schemes based on both the full and modified Newton-Raphson approaches have been included. Various structural problems analysed in both linear and non-linear domains have demonstrated the newly developed method. The efficiency and accuracy of the present study have been proved by correlation with available analytical and numerical results. 2/ Two and three dimensional displacement based fluid elements have been formulated including large displacement effects, introduced through the quadratic terms in the Almansi strain tensor. The "Updated Lagrangian" description of motion has been used. The main purpose of these elements is to model a contained inviscid fluid medium with no net flow rate or gross fluid motion. 3/ A four noded interface element linking the fluid and structural nodes has been produced. Various analyses of fluid-structure dynamic interaction systems have been investigated including a complete free vibration analysis of fluid storage tanls. Also, a general 3-D seismic response of cylindrical liquid storage shells has been carried out. Finally the modelling of the free surface sloshing effects has been addressed. The thesis contains illustrative examples to demonstrate the capability and accuracy of the newly developed procedures. Dynamics of structures including fluid interaction [texte imprimé] / Abdelkrim Chelghoum, Auteur ; Patrick Dowling, Directeur de thèse ; John Harding, Directeur de thèse . - [S.l.] : University of London, 1986 . - 268 f. : ill. ; 27 cm. Thèse de Doctorat : Génie Civil : Londres, Université de Londres : 1986 Bibliogr. f. 270 - 299 . Annexe f. 301 - 324 Langues : Anglais (eng) Mots-clés : Dynamics  of  structures Fluid-structure  systems Vibration  analysis Seismic  analysis Finite  element  method Non-linear  dynamic  methods Finite  element  method Non-linear Index. décimale : D002686 Résumé : This thesis investigates the non-linear behaviour of fluid-structure systems with particular emphasis on the vibration and seismic analysis of ground-supported cylindrical liquid filled shells. A numerical approach based mainly on the finite element has been formulated. Three main developments are reported: 1/ Formulation and implementation of non-linear dynamic methods. The derived finite element incremental equations of motion have been solved by a combined "time integration-iterative scheme" approach. Both implicit and explicit temporal integration methods have been used. In the former approach, the Newmark's and Wilson's schemes have been reviewed and implemented. In the latter, the central difference operator was selected. Non-linear iterative schemes based on both the full and modified Newton-Raphson approaches have been included. Various structural problems analysed in both linear and non-linear domains have demonstrated the newly developed method. The efficiency and accuracy of the present study have been proved by correlation with available analytical and numerical results. 2/ Two and three dimensional displacement based fluid elements have been formulated including large displacement effects, introduced through the quadratic terms in the Almansi strain tensor. The "Updated Lagrangian" description of motion has been used. The main purpose of these elements is to model a contained inviscid fluid medium with no net flow rate or gross fluid motion. 3/ A four noded interface element linking the fluid and structural nodes has been produced. Various analyses of fluid-structure dynamic interaction systems have been investigated including a complete free vibration analysis of fluid storage tanls. Also, a general 3-D seismic response of cylindrical liquid storage shells has been carried out. Finally the modelling of the free surface sloshing effects has been addressed. The thesis contains illustrative examples to demonstrate the capability and accuracy of the newly developed procedures.

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité	Spécialité	Etat_Exemplaire
D002686	D002686	Papier + ressource électronique	Bibliothèque centrale	Thèse de Doctorat	Disponible	Genie_civil	Consultation sur place/Téléchargeable

Documents numériques

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