Browsing Institutt for konstruksjonsteknikk by Document Types "Doctoral thesis"
Now showing items 21-40 of 194
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Behaviour and modelling of two semi-crystalline polymers over a wide range of rates and temperatures
(Doctoral theses at NTNU;2023:104, Doctoral thesis, 2023)Through this thesis, I seek to explore how to characterise and simulate the strain rate and temperature dependent material behaviour of semi-crystalline polymers. To this end, a cross-linked polyethylene and a polypropylene ... -
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 ... -
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 ... -
Behaviour of steel connections under quasi-static and impact loading An experimental and numerical study
(Doctoral theses at NTNU;2017:159, Doctoral thesis, 2017)This PhD thesis is concerned with the behaviour of steel joints and connections subjected to quasi-static and impact loading. A major part of the work involves experimental testing, which includes both component and ... -
Behaviour of threaded steel fasteners at elevated deformation rates: An experimental and numerical study
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:65, Doctoral thesis, 2014)The main objective of this work is to investigate the ultimate load, behaviour characteristics and failure modes of threaded steel fasteners subjected to various combinations of tension and shear loads at elevated deformation ... -
Behaviour, modelling and simulation of thin steel plates subjected to combined blast and impact loading
(Doctoral thesis, 2022)This thesis studies the effects of combined fragment impact and blast loading on thin steel plates. It is here assumed that the fragments strike before the arrival of the blast wave. The fragments are represented through ... -
Biomechanical Aspects of Distraction Osteogenesis: Experimental Evaluation of Three Wire Fixator Designs and Assessment of Callus Stiffness Using Finite Element Modelling
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:250, Doctoral thesis, 2012) -
Biomechanical modeling of fetal veins: The umbilical vein and ductus venosus bifurcation
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:299, Doctoral thesis, 2012) -
Biomechanics of degenerative mitral valve leaflets: Mechanical behavior, collagen structure, and numerical simulations
(Doctoral theses at NTNU;2023:395, Doctoral thesis, 2023)Degenerative mitral valve disease impacts around 2% of the population and leads to mitral regurgitation because of valvular incompetence. Two distinct phenotypes of degenerative mitral valve disease are fibroelastic ... -
Blended cement with reduced CO2 emission- utilizing the fly ash-limestone synergy
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:32, Doctoral thesis, 2011)During cement production large amounts of CO2 are emitted, about 1 tonne CO2 per tonne clinker, if no measures are taken. About 40% originates from fuel combustion, grinding and other operations, and 60% from the de-carbonation ... -
Buckling and geometrical nonlinear beam-type analyses of timber structures
(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 ... -
Bumper beam-longitudinal system subjected to offset impact loading : an experimental and numerical study
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:193, Doctoral thesis, 2005) -
Cement paste chemistry and its relation to concrete durability
(Doctoral theses at NTNU;2023:258, Doctoral thesis, 2023) -
Characterization and modeling of the mechanical behavior of polymer foam
(Doctoral theses at NTNU;2021:173, Doctoral thesis, 2021)Polymer foams are often used in safety applications, for example in pedestrian impact protection where a polymer foam bumper can increase pedestrian safety in the event of an accident. Application of this type of material ... -
Characterization and Modelling of the Anisotropic Behaviour of High-Strength Aluminium Alloy
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:37, Doctoral thesis, 2014)The purpose of the present study is to describe and characterize the anisotropic flow and fracture behaviour of a high-strength aluminium alloy. To this end, thick plates of AA7075-T651 aluminium alloy have been ... -
Chloride induced reinforcement corrosion in concrete: Concept of critical chloride content – methods and mechanisms
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:113, Doctoral thesis, 2011)Chloride induced reinforcement corrosion is widely accepted to be the most frequent mechanism causing premature degradation of reinforced concrete structures. Condition assessment and service life prediction is based on ... -
Combined Blast and Fragment Loading on Steel Plates
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:361, Doctoral thesis, 2013)The thesis describes research related to the combined blast and fragment loading on steel plates. Preliminary experimental work with cased high-explosive charges against steel plates revealed several research topics that ... -
Competitive timber floors Optimisation of hollow section timber floor elements for adaptable buildings
(Doctoral theses at NTNU;2021:134, Doctoral thesis, 2021) -
Conceptual form-finding in structural engineering
(Doctoral theses at NTNU;2020:232, Doctoral thesis, 2020)The building industry is a growing industry, and it is expected to be expanding further in the near future. In the design, production and construction of new projects, the conceptual design is clearly the most creative ... -
CONDUCTION MECHANISMS IN CONDUCTIVE ADHESIVES WITH METAL-COATED POLYMER SPHERES
(Doctoral theses at NTNU;2016:349, Doctoral thesis, 2016)Isotropic conductive adhesives (ICAs), i.e. polymer adhesives with a percolating network of filler particles embedded for conductivity, have been used as alternatives to soldering in electronic devices for decades. More ...