Blar i NTNU Open på forfatter "Langseth, Magnus"

Viser treff 21-40 av 101

    • Bending of X65 Offshore Steel Pipes 

      Lofthaug, Kristoffer; Digerud, Erik (Master thesis, 2014)
      This thesis is part of an ongoing research program between SIMLab and Statoil about impact loads on X65 offshore pipelines and it is a continuation of previous work.Offshore pipelines are frequently impacted by accidental ...

    • Buckling of hollow aluminum columns 

      Amundsen, Niklas; Lynum, Aksel (Master thesis, 2017)
      This thesis studies the behaviour of axially loaded circular hollow cylindrical columns in aluminium and is written as a part of the project Design of power pylons in aluminium customised for automatic production . The ...

    • Buckling of hollow rectangular aluminum columns 

      Haraldseid, Vegard Nikolai (Master thesis, 2018)
      This thesis is written at Structural Impact Laboratory (SIMLab) and the Centre of Advanced Structural Analysis (CASA) in collaboration with SINTEF and Statnett. The capacity of simply supported aluminium columns exposed ...

    • Combined three-point bending and axial tension of pressurised and unpressurised X65 offshore steel pipes – Experiments and simulations 

      Kristoffersen, Martin; Langseth, Magnus; Børvik, Tore (Journal article; Peer reviewed, 2018)
      Subsea pipelines are occasionally struck and hooked by objects such as anchors or trawl gear. The initial denting, followed by potential hooking and displacement of the pipeline, give rise to a complex load and deformation ...

    • Connections between steel and aluminium using adhesive bonding combined with self-piercing riveting 

      Reil, Matthias; Morin, David; Langseth, Magnus; Knoll, Octavian (Journal article; Peer reviewed, 2018)
      The multi-material design of modern car bodies requires joining technologies for dissimilar materials. Adhesive bonding in combination with self-piercing riveting is widely used for joining steel and aluminium structures. ...

    • Connections between steel and aluminium using adhesive bonding combined with self-piercing riveting: Testing, modelling and analysis 

      Reil, Matthias (Doctoral theses at NTNU;2019:319, Doctoral thesis, 2019)
      The multi-material design of modern car bodies requires joining technologies for dissimilar materials. Adhesive bonding in combination with Self-Piercing Riveting (SPR) is widely used for joining steel and aluminium alloys. ...

    • Constitutive modeling of aluminum foam including fracture and statistical variation of density 

      Reyes, Aase Gavina Roberg; Hopperstad, Odd Sture; Berstad, Torodd; Hanssen, Arve Grønsund; Langseth, Magnus (Journal article; Peer reviewed, 2003)
      An existing constitutive model applicable for aluminum foam was evaluated. The model was implemented in LS-DYNA, and several test cases were analyzed and compared to experimental data. The numerical analyses consisted of ...

    • Crash behavior of obliquely loaded aluminum extrusions 

      Reyes, Aase Gavina Roberg; Langseth, Magnus; Hopperstad, Odd Sture (Chapter, 2002)
      The energy absorbing capability of obliquely loaded aluminum extrusions was studied through quasi-static experiments. Square aluminum columns in alloy AA6060 were clamped at one end and oblique load conditions were realized ...

    • Crashworthiness of aluminum extrusions subjected to oblique loading: experiments and numerical analyses 

      Reyes, Aase Gavina Roberg; Langseth, Magnus; Hopperstad, Odd Sture (Journal article; Peer reviewed, 2002)
      Oblique loading was studied through quasi-static experiments and numerical simulations. The behavior of square aluminum columns in alloy AA6060 subjected to quasi-static oblique loading was investigated experimentally for ...

    • Damage and Failure in an X65 Steel Pipeline Caused by Trawl Gear Impact 

      Kristoffersen, Martin; Børvik, Tore; Langseth, Magnus; Hopperstad, Odd Sture; Ilstad, Håvar; Levold, Erik (Chapter, 2013)
      Offshore pipelines subjected to accidental impact loads from trawl gear or anchors may experience large global deformations and large local strains, creating a complex stress and strain history. In this study experiments ...

    • Deformasjon av trykksatte rørledninger 

      Jakobsen, Espen (Master thesis, 2013)
      Offshore pipelines may be subjected to impact by anchor and trawl gear. An anchor impact will drag the pipeline out of its position, before it is released and the pipe straightens, due to the rebound and large axialforces. ...

    • Denting of coated and uncoated offshore steel pipes 

      Holm, Nicolay Line; Røshol, Eivind Torgunrud (Master thesis, 2015)
      In the present thesis, numerical and experimental investigations of coated offshore pipelines were conducted. The objective was to investigate how the polypropylene coating affected the global response of the pipes. The ...

    • Design and finite element simulations of aluminium foam-filled thin-walled tubes 

      Hanssen, Arve Grønsund; Reyes, Aase Gavina Roberg; Hopperstad, Odd Sture; Langseth, Magnus (Journal article; Peer reviewed, 2005)
      This paper presents experiences gained at SIMLab in modelling and design of aluminium-foam-filled tubes for structural applications. The main challenges for robust finite element simulations using explicit codes are outlined ...

    • Ductile Fracture of Steel Sheets under Dynamic Membrane Loading 

      Gruben, Gaute; Morin, David; Langseth, Magnus; Hopperstad, Odd Sture (Journal article; Peer reviewed, 2017)
      Failure prediction assessment is conducted based on validated finite element simulations of impact tests performed on 1.8 mm dual-phase and 1.0 mm martensitic steel sheets. The sheets were clamped between two steel rings ...

    • Dynamic Response of Flexible Beams Subjected to Blast Loading 

      Gisnås, Ingrid; Syed, Amatul Baki Ayesha Binte Awn (Master thesis, 2021)

    • Dynamic versus quasi-static loading of X65 offshore steel pipes 

      Kristoffersen, Martin; Børvik, Tore; Langseth, Magnus; Hopperstad, Odd Sture (Journal article; Peer reviewed, 2016)
      Anchors or trawl gear occasionally impact offshore pipelines, resulting in large local and global deformations. Impact velocities are typically less than 5 m/s, but local strain rates may be very high. In this study strain ...

    • Empty and foam-filled circular aluminium tubes subjected to axial and oblique quasi-static loading 

      Børvik, Tore; Hopperstad, Odd Sture; Reyes, Aase Gavina Roberg; Langseth, Magnus; Solomos, G.; Dyngeland, Torbjørn (Journal article; Peer reviewed, 2003)
      Tests on tubular columns made of the aluminium alloy 6060-T4 under axial and oblique, quasi-static loading have been performed. The columns were fixed at one extremity, while a concentrated force was applied at the other ...

    • Experimental investigation and numerical modelling of the mechanical response of a semi-structural polyurethane adhesive 

      Berntsen, John Fredrick; Morin, David; Clausen, Arild Holm; Langseth, Magnus (Journal article; Peer reviewed, 2019)
      The use of adhesives in load-carrying structures and components has increased recently, especially in the automotive industry. There has been many studies on structural adhesives, but when it comes to semi-structural ...

    • Experimental study on the response of thin aluminium and steel plates subjected to airblast loading 

      Aune, Vegard; Fagerholt, Egil; Hauge, Kristoffer Olsen; Langseth, Magnus; Børvik, Tore (Journal article; Peer reviewed, 2016)
      This work presents results from an experimental investigation on the influence of stand-off distance on the dynamic response of thin ductile plates subjected to airblast loading. The square plates had an exposed area of ...

    • Failure modes of bolt and nut assemblies under tensile loading 

      Grimsmo, Erik Løhre; Aalberg, Arne; Langseth, Magnus; Clausen, Arild Holm (Journal article; Peer reviewed, 2016)
      Thread failure of bolt and nut assemblies subjected to tension is generally undesired because it is a less ductile failure mode than fracture of the threaded shank of the bolt (denoted bolt fracture). Another issue is that ...