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Macroscopic modelling of Flow-Drill Screw connections

Sønstabø, Johan Kolstø; Morin, David Didier; Langseth, Magnus
Journal article, Peer reviewed
Accepted version
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URI
http://hdl.handle.net/11250/2468511
Date
2016
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  • Institutt for konstruksjonsteknikk [1599]
  • Publikasjoner fra CRIStin - NTNU [21000]
Original version
Key Engineering Materials. 2016, 710 143-148.   10.4028/www.scientific.net/KEM.710.143
Abstract
This study focuses on the modelling of Flow-Drill Screw (FDS) connections in large-scale shell analyses. Macroscopic connection models for large-scale crash simulations were assessed for modelling of FDS connections between two aluminium plates. Of the investigated models were two commercial element-based and three commercial constraint-based models, as well as two new user-defined element-based models. All models were calibrated using cross tests in tension, shear and a mixed shear/tension mode. In order to assess the flexibility of the models two sets of experimental data were used. In the first one, a small screw was used to join two sheets of the same rolled alloy while the second set used a longer screw with a larger head to join a rolled alloy to an extrusion. The calibrated models were validated using a two-step approach involving benchmark and component tests. Of the commercial models, the constraint-based performed better than the element-based. The new user-defined models gave similar results as the commercial constraint-based models. From the obtained results, recommendations for modelling of FDS connections for large-scale analyses were formulated.
Publisher
Trans Tech Publications
Journal
Key Engineering Materials

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