Blar i NTNU Open på forfatter "Grytten, Frode"
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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 ...