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Ein Beitrag zur Berechnung des Zuschnitts von vorgespannten Membranen / J. Bäuerle (1995)

Public Titre : Ein Beitrag zur Berechnung des Zuschnitts von vorgespannten Membranen Titre original : [Une contribution au calcul de découpage de membranes générées] Type de document : Thèse/HDR Auteurs : J. Bäuerle, Auteur Editeur : Munich : Bayerische Akademie der Wissenschaften Année de publication : 1995 Collection : DGK - C Sous-collection : Dissertationen num. 439 Importance : 67 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-7696-9482-6 Note générale : Bibliographie Langues : Allemand (ger) Descripteur : [Vedettes matières IGN] Analyse mathématique [Termes IGN] compensation par moindres carrés [Termes IGN] délimitation des feuilles (assemblage) [Termes IGN] interpolation [Termes IGN] toit Résumé : (Auteur) After a brief introduction into the modelling of surfaces of equilibrium of forces - using techniques like the method of force densities or the dynamic relaxation method - and an introduction into different types of cutting pattern determination for structural membranes, a strategy for the generation of planar cutting patterns for prestressed membrane structures is described. As starting information a given surface with nodal force equilibrium - as for example generated by the force density method - is used by the approach. The strategy has three main steps: geodesic line specification as seamlines on the surface, flattening of the individual strips defined by the seamlines and the surface boundary and borderlength adjustment of these strips compensating distortions due to the double curvature of the surface under cutting pattern determination. For all the steps solutions using least squares adjustment algorithms are presented. to addition, the modelling of welding all strips together resulting in a complete membrane roof is presented. A afferent model is therefore introduced to handle the physical properties of the membrane more precisely 'han calculating the membrane roof as a cable network with individual stiffnesses of the cable elements assigned. The basic elements of this new model are small crossed bar elements. In this new model shear can be taken into account thus the cloth of each strip can be modelled more exactly. Numéro de notice : 28050 Affiliation des auteurs : non IGN Thématique : MATHEMATIQUE Nature : Thèse étrangère Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=63397

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
28050-01	23.30	Livre	Centre de documentation	Mathématiques	Disponible
28050-02	23.30	Livre	Centre de documentation	Mathématiques	Disponible