• Modeling of textured aluminum alloys used in a bumper system: Material tests and characterization 

      Reyes, Aase Gavina Roberg; Hopperstad, Odd Sture; Lademo, Odd-Geir; Langseth, Magnus (Journal article; Peer reviewed, 2006)
      The three materials AA7108, AA7003 and AA6060, which can be parts of a typical bumper system in aluminum, were characterized in the present paper. Different tempers of the materials were studied. Through simple material ...
    • Polymer foam used in bumper systems 

      Lønning, Torodd Balchen (Master thesis, 2018)
      Foams made of polymer are used in protective structures in several fields, such as helmets or car bumpers. The material s mechanical response allows for absorption of energy caused by impact loading and can reduce peak ...
    • Prediction of necking for two aluminum alloys under non-proportional loading by using an FE-based approach 

      Reyes, Aase Gavina Roberg; Hopperstad, Odd Sture; Berstad, Torodd; Lademo, Odd-Geir (Journal article; Peer reviewed, 2008)
      Forming Limit Diagrams (FLDs) were found numerically for sheets under non-proportional loading by means of an FE-based Marciniak–Kuczynski (M-K) analysis. The material model used in the analysis includes two instability ...
    • Sandwich panels with polymeric foam cores exposed to blast loading: An experimental and numerical investigation 

      Brekken, Kristoffer Aune; Reyes, Aase Gavina Roberg; Berstad, Torodd; Langseth, Magnus; Børvik, Tore (Peer reviewed; Journal article, 2020)
      Sandwich panels have proven to be excellent energy absorbents. Such panels may be used as a protective structure in, for example, façades subjected to explosions. In this study, the dynamic response of sandwich structures ...
    • Square aluminum tubes subjected to oblique loading 

      Reyes, Aase Gavina Roberg; Langseth, Magnus; Hopperstad, Odd Sture (Journal article; Peer reviewed, 2003)
      The behavior and energy-absorbing capability of obliquely loaded square thin-walled aluminum columns in alloy AA6060 were studied through quasi-static experiments and FEM-analyses with LS-DYNA. The specimens were clamped ...
    • Validation study of failure prediction in crash analysis 

      Reyes, Aase Gavina Roberg; Dørum, Cato; Hopperstad, Odd Sture; Langseth, Magnus; Lademo, Odd-Geir; Eriksson, Magnus (Chapter, 2008)
      Modeling of plastic deformation and failure is critical in crash analysis. In the present paper, we have studied one approach to represent instabilities and damage evolution in non-linear finite element analyses of forming ...