Blar i NTNU Open på forfatter "Grytten, Frode"

Viser treff 1-7 av 7

    • A thermo-elasto-viscoplastic constitutive model for polymers 

      Johnsen, Joakim; Clausen, Arild Holm; Grytten, Frode; Benallal, Ahmed; Hopperstad, Odd Sture (Journal article; Peer reviewed, 2018)
      In this study, a thermo-elasto-viscoplastic model is developed for a low density cross-linked polyethylene (XLPE) in an attempt to describe the combined effects of temperature and strain rate on the stress-strain response ...

    • Determination of Anisotropic Mechanical Properties for Materials Processed by Laser Powder Bed Fusion 

      Hovig, Even Wilberg; S. Azar, Amin; Grytten, Frode; Sørby, Knut; Andreassen, Erik (Journal article; Peer reviewed, 2019)
      Improving the success rate in additive manufacturing and designing highly optimized structures require proper understanding of material behaviour. This study proposes a novel experimental method by which anisotropic ...

    • Experimental set-up for determination of the large-strain tensile behaviour of polymers at low temperatures 

      Johnsen, Joakim; Grytten, Frode; Hopperstad, Odd Sture; Clausen, Arild Holm (Journal article; Peer reviewed, 2016)
      In this study, we present a method to determine the large-strain tensile behaviour of polymers at low temperatures using a purpose-built temperature chamber made of polycarbonate (PC). This chamber allows for several cameras ...

    • Hydroelastic response of concrete shells during impact on calm water 

      Abrahamsen, Bjørn Christian; Grytten, Frode; Hellan, Øyvind; Søreide, Tore H.; Faltinsen, Odd Magnus (Peer reviewed; Journal article, 2023)
      Many ocean structures located offshore are supported by large vertical concrete columns. High and steep storm waves – in the process of breaking – may induce large local slamming loads on these columns. The present work ...

    • Influence of strain rate and temperature on the mechanical behaviour of rubber-modified polypropylene and cross-linked polyethylene 

      Johnsen, Joakim; Grytten, Frode; Hopperstad, Odd Sture; Clausen, Arild Holm (Journal article; Peer reviewed, 2017)
      In the present work, we investigate the effects of strain rate (e˙=0.01 s−1, 0.1 s−1, and 1.0 s−1) and low temperature (T=−30 °C, −15 °C, 0 °C, and 25 °C) on the mechanical behaviour in tension and compression of two ...

    • Low-Velocity Penetration of Aluminium Plates 

      Grytten, Frode (Doktoravhandlinger ved NTNU, 1503-8181; 2008:46, Doctoral thesis, 2008)
      The present thesis describes research on quasi-static and low velocity perforation of rolled aluminium plates, where the main objective has been to gain a better knowledge of the physical processes taking place during this ...

    • A micromechanical model of fiber bridging including effects of large deflections of the bridging fibers 

      Grytten, Frode; Sørensen, Bent Fruergaard; Goutianos, Stergios; Joki, Reidar Kvale; Jørgensen, Jens Kjær (Peer reviewed; Journal article, 2021)
      A micromechanical model of cross-over fiber bridging is developed for the prediction of macroscopic mixed-mode bridging laws (traction-separation laws). The model is based on non-linear beam theory and takes into account ...