• Behaviour and modelling of flow-drill screw connections 

      Sønstabø, Johan Kolstø (Doctoral theses at NTNU;2018:73, Doctoral thesis, 2018)
      This PhD thesis consists of experimental and numerical studies of the behaviour and modelling of flow-drill screw connections. It is comprised of four parts, and each part has been published, or accepted for publication, ...
    • Behaviour and Modelling of Flow-Drilling Screw Connections 

      Amundsen, Dan Hugo; Gustad, Jo Utne (Master thesis, 2014)
      This thesis presents an experimental and numerical study on the behaviour of Flow-Drilling Screw (FDS) connections under various quasi-static loading conditions. The behaviour and fracture of the connections were closely ...
    • Behaviour and Modelling of Self-piercing Screw and Self-piercing Rivet Connections: An Experimental and Numerical Investigation 

      Sønstabø, Johan Kolstø; Holmstrøm, Petter Henrik (Master thesis, 2013)
      Accurate and reliable models of connections are essential for the design of aluminium parts in cars. Today, there exist a few models customized for self-piercing rivets (SPR), but none for self-piercing screws (SPS). This ...
    • Behaviour of Flow-Drilling Screw Connections 

      Sønstabø, Johan Kolstø; Holmstrøm, Petter Henrik; Morin, David; Langseth, Magnus (Journal article; Peer reviewed, 2014)
      An experimental study on the behaviour and fracture of flow-drilling screw connections was carried out. Cross test specimens were used to study the deformation and fracture of the connections under different loading modes. ...
    • Macroscopic modelling of Flow-Drill Screw connections 

      Sønstabø, Johan Kolstø; Morin, David Didier; Langseth, Magnus (Journal article; Peer reviewed, 2016)
      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 ...
    • Macroscopic modelling of flow-drill screw connections in thin-walled aluminium structures 

      Sønstabø, Johan Kolstø; Morin, David; Langseth, Magnus (Journal article; Peer reviewed, 2016)
      This paper presents an investigation on the modelling of flow-drill screw connections in thin-walled aluminium plates in large-scale finite element analyses using different macroscopic modelling techniques. Five models ...
    • Macroscopic strength and failure properties of flow-drill screw connections 

      Sønstabø, Johan Kolstø; Holmstrøm, Petter Henrik; Morin, David; Langseth, Magnus (Journal article; Peer reviewed, 2015)
      Force–displacement responses and failure behaviour of connections using flow-drill screws to join aluminium sheets were investigated under various quasi-static loading conditions. This included single connector tests under ...
    • Materialparametere for rustfritt stål i numeriske analyser 

      Faksvåg, Kristian Ullern; Jakobsen, Lars Omland (Master thesis, 2019)
      Austenittisk syrefast stål er attraktivt for konstruksjoner utsatt for høy belastning i korrosjonsutsatte miljø. I kjent litteratur eksisterer det ikke sanne spenning-tøyningskurver opp til brudd for AISI 316L (EN 1.4404) ...
    • On the effect of pilot holes on the mechanical behaviour of flow-drill screw joints. Experimental tests and mesoscale numerical simulations 

      Costas, Miguel; Morin, David; Sønstabø, Johan Kolstø; Langseth, Magnus (Peer reviewed; Journal article, 2021)
      This research work investigated in detail the mechanical performance of a flow-drill screw connection of two aluminium plates with and without pilot holes. An extensive experimental campaign involving material and joint ...
    • Static and dynamic testing and modelling of aluminium joints with flow-drill screw connections 

      Sønstabø, Johan Kolstø; Morin, David; Langseth, Magnus (Journal article; Peer reviewed, 2018)
      A new component test suited for quasi-static and dynamic testing of flow-drill screw connections is presented. The component specimen was made of two different aluminium alloys, and included connections with two material ...
    • Testing and modelling of flow-drill screw connections under quasi-static loadings 

      Sønstabø, Johan Kolstø; Morin, David; Langseth, Magnus (Journal article; Peer reviewed, 2018)
      The behaviour of a flow-drill screw connection under different quasi-static loadings was simulated using finite element models with detailed solid element meshes. The numerical models were developed with a rate-independent ...