Browsing Institutt for konstruksjonsteknikk by Issue Date
Now showing items 21-40 of 2458
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Alkali-reactive and inert Fillers in Concrete. Rheology of fresh Mixtures and expansive Reactions
(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
(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
(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 ... -
High-strength Steel Plates subjected to Projectile Impact: An experimental and numerical Study
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:38, Doctoral thesis, 2004)The present thesis involves research on the ballistic penetration and perforation of steel plates, where the overall goal is to increase the physical understanding of the different phenomena taking place during this type ... -
Design and finite element simulations of aluminium foam-filled thin-walled tubes
(Journal article; Peer reviewed, 2005)This paper presents experiences gained at SIMLab in modelling and design of aluminium-foam-filled tubes for structural applications. The main challenges for robust finite element simulations using explicit codes are outlined ... -
Mechanical and adaptive behaviour of bone in relation to hip replacement: A study of bone remodelling and bone grafting
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:34, Doctoral thesis, 2005)This thesis, consisting of an introduction and four separate papers, gathers considerations on bone behaviour in relation to total hip replacement. Aspects related to primary hip replacement, principally adaptive bone ... -
Behaviour of Aluminium Extrusions Subjected to Axial Loading
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:7, Doctoral thesis, 2005)This thesis deals with the transition from progressive to global buckling of axially loaded thin-walled aluminium extrusions. The behaviour of the extrusions was studied experimentally and numerically using the finite ... -
Material characterization and modeling of textured aluminum alloys used in a bumper system
(Chapter, 2005)In the present paper, two materials AA7108 and AA6060, which can be parts of a typical bumper system in aluminum, have been characterized. Material properties were identified for a material model that was recently implemented ... -
Bumper beam-longitudinal system subjected to offset impact loading : an experimental and numerical study
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:193, Doctoral thesis, 2005) -
Analysis of geometrical Nonlinearities – with Applications to Timber Structures
(Doctoral theses at NTNU;2005:74, Doctoral thesis, 2005)A large part of the study is concerned with geometrical nonlinearities in structural systems, primarily 3D frame type structures. Parametrizations of finite rotations are studied, and geometric terms associated with ... -
Thermal aspects of corrosion of steel in concrete : effect of low temperature on the resistivity and the cathodic reaction rate
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:5, Doctoral thesis, 2005) -
Pilestredet park – strenge krav til gjenbruk. Hva betyr det for betongen ?
(Research report, 2005)SINTEF NTNU Betonginformasjonsdag -
Simulations of 2D dynamic brittle fracture by the element-free Galerkin method and linear fracture mechanics
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:125, Doctoral thesis, 2006) -
Modelling of welded thin-walled aluminium structures
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:78, Doctoral thesis, 2006)This thesis aims to develop a comprehensive methodology for capacity prediction of thin-walled welded aluminium structures. Through material testing, model choice and calibration, numerical simulations and experimental ... -
Time-variant reliability of dynamic systems by importance sampling and probabilistic analysis of ice loads
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:139, Doctoral thesis, 2006)The main objective of this thesis is to develop an efficient simulation technique to estimate the failure probability of time-dependent systems, whose state is expressed as a solution of Itô stochastic differential ... -
Modeling of textured aluminum alloys used in a bumper system: Material tests and characterization
(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 ... -
Deformations, strain capacity and cracking of concrete in plastic and early hardening phases
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:234, Doctoral thesis, 2007)Field observation reveals that cracking of free concrete surfaces in the period before and during setting, may appear at two basically different ages: Minutes after surface finishing, here called “plastic phase” and at ... -
Mechanical properties of nanostructured polymer particles for anisotropic conductive adhesives
(Journal article; Peer reviewed, 2007)Metal-coated polymer particles are used as a critical component in anisotropic conductive adhesives. The mechanical properties of polymer particles are of crucial importance to both application and design. In this study, ... -
Fibre Reinforcement in Load Carrying Concrete Structures: Laboratory and Field Investigations compared with Theory and Finite Element Analysis
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:50, Doctoral thesis, 2008)Fibre reinforcement can provide an alternative to conventional steel bars in order to improve the efficiency and working conditions on construction sites and in the prefabrication industry. Through the fibres ability to ... -
Prediction of necking for two aluminum alloys under non-proportional loading by using an FE-based approach
(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 ...