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Blar i Institutt for konstruksjonsteknikk på utgivelsesdato

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Viser treff 1-20 av 2034

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    • Alkali Aggregate Reactions (AAR) in Norway: Thin section analysis and expansion measurements from a dam and a bridge 

      Jacobsen, Stefan; Gran, Hans Christian (Peer reviewed; Journal article, 1992)
      Two concrete structures with AAR have been investigated. The structures are a dam and a bridge, both approximately 30 years old. Both structures have a characteristic crack pattern on the surface of the concrete. Thin ...
    • An experimental study of beam-columns subjected to combined torsion, bending and axial actions 

      Aalberg, Arne (Doktor ingeniøravhandling;1995:66, Doctoral thesis, 1995)
      This report presents an investigation on the inelastic behaviour of steel I-section beam-columns under combinations of axial load, bending and torsion. The study is motivated by the lack of information on the ultimate ...
    • Some aspects of ski base sliding friction and ski base structure 

      Moldestad, Dag Anders (Dr. ingeniøravhandling, 0809-103X; 1999:137, Doctoral thesis, 1999)
      The present work highlights some aspects of ski base sliding friction and ski base structure. Ski base structure causes speed differences that range from negligible to almost 10% of the skier speed. The great speed difference ...
    • Kinematics in Regular and Irregular Waves based on a Lagrangian Formulation 

      Gjøsund, Svein Helge (Doktor ingeniøravhandling;, Doctoral thesis, 2000)
      Kinematics in two-dimensional regular and irregular swface waves is described based on the Lagrangian form of the equations of motion, with particular emphasis 011 the conditions in the so-called splash zone in irregular ...
    • Measurements and Simulations of Consolidation in First-Year Sea Ice Ridges, and some Aspects of Mechanical Behaviour 

      Høyland, Knut Vilhelm (Dr. ingeniøravhandling, 0809-103X; 2000:94, Doctoral thesis, 2000)
    • Self-induced cracking problems in hardening concrete structures 

      Bosnjak, Daniela (Dr. ingeniøravhandling, 0809-103X; 2000:121, Doctoral thesis, 2000)
      This thesis deals with prediction of early age cracking caused by restrained temperature dilation and autogenous deformation. Traditonally, prediction of early-age cracking has been based on temperature criteria. The ...
    • Buckling and geometrical nonlinear beam-type analyses of timber structures 

      Eggen, Trond Even (Doktor ingeniøravhandling;2000:56, Doctoral thesis, 2000)
      An existing co-rotated formulation is presented, and a consistent nonlinear 3D beam element, based on 2nd order theory, and with internal geometric stiffness, is developed for implementation in the formulation. The element ...
    • Ballistic Penetration and Perforation of Steel Plates 

      Børvik, Tore (Dr. ingeniøravhandling, 0809-103X; 2000:124, Doctoral thesis, 2001)
      Situations involving impact, i.e. the collision between two or more solids, were at one time primarily of concern to the military. Nowadays, as safety is highlighted within most branches of industry, the field of impact ...
    • Full- and Model Scale Study of Wind Effects on a medium-rise Building in a built up Area 

      Snæbjörnsson, Jónas Thór (Dr. ingeniøravhandling, 0809-103X; 2002:95, Doctoral thesis, 2002)
      The present study deals with full- and model scale study of wind effects on a medium-rise building in a built up area. Most low-rise building experiments have been based on an isolated building placed in a relatively ...
    • 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 ...
    • 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 ...
    • 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 ...
    • Rheology of Particle Suspensions: Fresh Concrete, Mortar and Cement Paste with Various Types of Lignosulfonates 

      Wallevik, Jon Elvar (Dr. ingeniøravhandling, 0809-103X; 2003:18, Doctoral thesis, 2003)
      The major issue concerns how the different lignosulfonate types changes the rheological properties of the cement based material (concrete, mortar and cement paste) as a function of temperature and time. In such terms, it ...
    • 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 ...
    • Aluminum foam-filled extrusions subjected to oblique loading: experimental and numerical study 

      Reyes, Aase Gavina Roberg; Hopperstad, Odd Sture; Langseth, Magnus (Journal article; Peer reviewed, 2004)
      The behavior of empty and foam-filled square thin-walled aluminum columns in alloy AA6060 subjected to quasi-static oblique loading was examined. Previous studies have shown that by introducing a load angle, the energy ...
    • On the shear capacity of steel plate girders with large web openings 

      Hagen, Nils Chr (Doktoravhandlinger ved NTNU, 1503-8181; 2005:9, Doctoral thesis, 2004)
      This report presents an investigation of the shear capacities of steel plate girders with web holes, penetrations, cut-outs or openings. The study is motivated by the need for simple guidelines that can be used in practical ...
    • Alkali-reactive and inert Fillers in Concrete. Rheology of fresh Mixtures and expansive Reactions 

      Pedersen, Bård Magne (Doktoravhandlinger ved NTNU, 1503-8181; 2004:92, Doctoral thesis, 2004)
      Due to the rather limited obtainable resources of natural aggregates suitable for concrete purposes, the technology of crushed aggregates becomes more important. The production of crushed aggregates generates large amounts ...
    • Modeling of material failure in foam-based components 

      Reyes, Aase Gavina Roberg; Hopperstad, Odd Sture; Hanssen, Arve Grønsund; Langseth, Magnus (Journal article; Peer reviewed, 2004)
      The modeling of material failure in foam-filled beams was explored through numerical analyses with LS-DYNA. The study was based on previous physical tests on bending of square aluminum extrusions filled with aluminum foam. ...
    • Behaviour and Strength Prediction of reinforced Concrete Structures with Discontinuity Regions 

      Brå, Helge (Doktoravhandlinger ved NTNU, 1503-8181; 2004:11, Doctoral thesis, 2004)
      This report presents an analytical study on reinforced concrete members with disturbed stress and strain states which are mainly caused by geometrical irregularities and loading conditions. Finite element methods are used ...

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