Numerische Berechnungen des Tragverhaltens von gleitfest-vorgespannten Schraubenverbindungen unter Berücksichtigung der Adhäsion
- verfasst von
- R. Nitsche, J. Nettingsmeier, T. Rutkowski, P. Wriggers, P. Schaumann
- Abstract
In order to enhance the capability of wind energy converters, higher standards for joining elements are necessary. The ongoing development in steel constructions leads to increasing loads of the entire construction and thus of the joining elements. Therefore, slip resistant prestressed bolt connections are frequently used in the field of steel truss towers. The load transmission is assumed by frictional contact between the components. Due to this connection type static as well as dynamic loads can be transmitted. Previous experiments indicated an enormous loss of pretension in the bolts and a rise of the sliding force limit after preceding dynamic exposure. After accomplishing these experiments zones with detached material adhering on the opposite construction part (cold welding effects) could be determined. As a first hypothesis this phenomenon is interpreted as the gearing of the surface-asperities in presence of adhesion. In this essay, an extension to general computational contact mechanics approaches is presented. A new friction model considering adhesion is implemented in an FE-enviroment. Furthermore, a comparison between numerical and experimental results is given.
- Organisationseinheit(en)
-
Institut für Baumechanik und Numerische Mechanik
Institut für Stahlbau
- Typ
- Artikel
- Journal
- Bauingenieur
- Band
- 82
- Seiten
- 77-84
- Anzahl der Seiten
- 8
- ISSN
- 0005-6650
- Publikationsdatum
- 02.2007
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Tief- und Ingenieurbau, Bauwesen
