Blar i NTNU Open på forfatter "Vestrum, Ole"

Viser treff 1-14 av 14

    • Constitutive modeling of a graded porous polymer based on X-ray computed tomography 

      Vestrum, Ole; Dæhli, Lars Edvard Blystad; Hopperstad, Odd Sture; Børvik, Tore (Peer reviewed; Journal article, 2020)
      This work focuses on the constitutive modeling of a graded porous polymer pipeline coating based on X-ray micro computed tomography (XRMCT). Previous work has revealed that finite element (FE) models generated from XRMCT ...

    • Design and Modeling of Vehicle Security Barriers 

      Sandvoll, Sigurd Vattekar; Stensvand, Ola Fjelltun (Master thesis, 2021)

    • Experimental Tests and Numerical Simulations on the Ballistic Impact Response of a Highly Inhomogeneous Aluminium Foam 

      Brekken, Kristoffer Aune; Vestrum, Ole; Dey, Sumita; Reyes, Aase; Børvik, Tore (Peer reviewed; Journal article, 2022)
      A sandwich structure is a composite material consisting of thin skins encapsulating a cellular core. Such structures have proven to be excellent energy absorbents and are frequently found in various types of protection. ...

    • Finite element analysis of porous polymer coated pipelines subjected to impact 

      Vestrum, Ole; Langseth, Magnus; Børvik, Tore (Peer reviewed; Journal article, 2021)
      Subsea steel pipelines are often coated with external polymer coatings. While primarily applied for corrosion protection and thermal insulation, such coatings have been shown to contribute significantly to the energy ...

    • Finite Element Implementation of Fibre-Reinforced Materials Model in Abaqus/Explicit 

      Vestrum, Ole (Master thesis, 2015)
      This thesis is concerned with the constitutive modelling of short fibre-reinforced composites in the finite element code Abaqus/Explicit. The model is presented as a generic framework which is based on a two-phase ...

    • Finite element modeling of porous polymer pipeline coating using X-ray micro computed tomography 

      Vestrum, Ole; Langseth, Magnus; Børvik, Tore (Journal article; Peer reviewed, 2019)
      Offshore pipelines are designed to sustain impact from fish trawl equipment and anchors, but due to component complexity, insulating coating solutions are often neglected in mechanical capacity estimates. In this work, ...

    • Impact against coated offshore steel pipes 

      Kulsrud, Eirik Bugge; Hammersvik, Steffen (Master thesis, 2017)
      This thesis is part of an ongoing research program between SIMLab and Statoil about impacts on coated offshore pipelines. Impact loads may occur from objects such as anchors or trawls, causing severe damage to the pipe ...

    • Impact on polymer-coated pipelines 

      Frydenberg, Håkon; Torp, Magnus Pjaaka (Master thesis, 2020)
      Denne masteroppgaven inneholder en eksperimentell og numerisk undersøkelse av den mekaniske styrken til undersjøiske rørledninger med isolasjonslag av polymer. Målet med oppgaven var å finne ut hvordan undersjøiske ...

    • Impact on polymer-coated pipelines 

      Frydenberg, Håkon; Torp, Magnus Pjaaka (Master thesis, 2020)
      Denne masteroppgaven inneholder en eksperimentell og numerisk undersøkelse av den mekaniske styrken til undersjøiske rørledninger med isolasjonslag av polymer. Målet med oppgaven var å finne ut hvordan undersjøiske ...

    • Impact on porous polymer coated pipelines 

      Vestrum, Ole (Doctoral theses at NTNU;2020:105, Doctoral thesis, 2020)

    • Mechanical behaviour of sacrificial sandwich panels 

      Bengtson, Olav Ingvaldsen (Master thesis, 2016)
      The main objective of this thesis is to conduct a numerical study of aluminium foam core sacrificial sandwich panels in order to understand how different parameters affect the energy absorption when subjected to various ...

    • Mechanical modeling of the polymeric coating on a subsea pipeline 

      Vestrum, Ole; Langseth, Magnus; Børvik, Tore (Chapter, 2019)
      Offshore pipelines may be exposed to a range of extreme loading situations during operation on the seabed such as impact by trawl gear or anchors. While not primarily being designed for it, thermal insulating polymeric ...

    • Quasi-static and dynamic indentation of offshore pipelines with and without multi-layer polymeric coating 

      Vestrum, Ole; Kristoffersen, Martin; Polanco-Loria, Mario; Ilstad, Håvar; Langseth, Magnus; Børvik, Tore (Journal article; Peer reviewed, 2018)
      Offshore pipelines are occasionally subjected to accidental impact loads from trawl gear or anchors, which may damage the pipe. In this study, a series of indentation experiments carried out on offshore steel pipes covered ...

    • Thin steel plates exposed to combined ballistic impact and partially confined airblast loading 

      Elveli, Benjamin Stavnar; Vestrum, Ole; Hauge, Knut Ove; Berstad, Torodd; Børvik, Tore; Aune, Vegard (Peer reviewed; Journal article, 2023)
      Pre-formed defects created by high-velocity impact have the potential to reduce the structural integrity of lightweight, flexible structures. This study evaluates the effect of complex, partially confined detonations on ...