Browsing Institutt for konstruksjonsteknikk by Document Types "Chapter"
Now showing items 61-80 of 97
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NUMERICAL SIMULATIONS OF SUBMERGED AND PRESSURISED X65 STEEL PIPES
(Chapter, 2013)While in service, pipelines may from time to time be exposed to impact loads from anchors or trawl gear. A lot of parameters influence the behaviour of the pipeline during impact, e.g. the diameter and thickness of the ... -
Numerical studies on the dynamic behavior of a superlong curved pontoon bridge under wind and wave actions
(Chapter, 2019)Floating bridges serve as attractive solutions where classical bridge concepts are not possible. However, compared to more commonly encountered bridge concepts such as cablesupported bridges, their dynamic behavior remains ... -
On the ballistic impact resistance of additive manufactured maraging steel targets compared to that of cast targets
(Chapter, 2023)The advent of additive manufacturing (AM) in the defence industry has introduced possibilities for customisable and optimised light-weight armour. Maraging steel is well suited to AM and takes on ultra high-strength post ... -
On the Fluid-Structure Interaction Effects of Plated Structures Subjected to Blast Loading - An Experimental and Numerical Investigation
(Chapter, 2015)An experimental and numerical investigation using a new shock tube facility to study potential fluid-structure interaction (FSI) effects on thin aluminium plates are presented. The shock tube is capable of recreating a ... -
One algorithm, two timber bridges built in Orkdal, Norway
(Chapter, 2017)The building industry is about to embrace mass customization. In recent years, iconic buildings have demanded a new way of approaching design and manufacturing. We, among others, believe that parametrization is key to fully ... -
Particle interaction potential parameters and effect of copolymer superplasticizer in cement paste: an overview
(Chapter, 2022)The rheological properties of fresh cement-based materials determine their applicability for various types of use such as extrusion, 3D printing, self-compacting (SCC) placement, spraying, pumping, etc. Proper control of ... -
Perforation of welded aluminum extrusions: Numerical prediction and experimental validation
(Chapter, 2015)A purely numerical procedure for predicting the perforation resistance of welded extruded AA6082-T6 aluminum profiles is presented in this study. The numerical work was conducted completely independent of the experimental ... -
Performance of a Linear Solution for Approximating Nonlinear Response of Reinforced Concrete Structures Subjected to Earthquake Shaking
(Chapter, 2020)Nonlinear Time History Analyses (NTHA) are generally regarded as the most accurate way of predicting the dynamic response of a structure to a given seismic ground motion. However, these types of analyses are computationally ... -
Pipeline Fracture due to Compression-Tension Loading Caused by Foreign Object Impact
(Chapter, 2018)In areas frequented by fishing vessels, trawl equipment or anchors may interfere with pipelines and cause damage through impact, potential hooking, and ensuing release of the pipeline. This load sequence of denting followed ... -
Polymer foam crash components subjected to low velocity impact
(Chapter, 2018)The automotive industry has increased its use of energy absorbing systems in recent years. These components can involve sandwich structures consisting of two skins with a core material between them. The core is often a ... -
Portland Clinker-Fly Ash Cements – Relation between Compressive Strength and Microstructure
(Chapter, 2021)Portland cements were made by mixing 4 different clinkers with 2 gypsum levels and 0-5% limestone powder. The compressive strength after 28 days of curing varied from 40 (5802) to 70 MPa (9718 psi) for mortar with equal ... -
Predicting AEA dosage by Foam Index and adsorption on Fly Ash
(Chapter, 2012)Abstract: The unpredictable air entrainment in fly ash concrete caused by carbon in fly ash was studied by measuring adsorption of Air Entraining Agents (AEA) on the fly ash and by Foam Index (FI) testing. The FI test ... -
Probabilistic modelling of building stock properties for urban mining
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Probabilistic Seismic Hazard Analysis for Offshore Bangladesh Including Fault Sources
(Chapter, 2018)This paper presents a probabilistic seismic hazard analysis (PSHA) for a site offshore Maheshkhali Island, Bangladesh. The tectonic setting of the area is complex, and the PSHA includes active crustal faults, megathrust ... -
Pyrrhotite in concrete aggregate. Introduction to mechanism, damage potential and ongoing research
(Chapter, 2022)Pyrrhotite is an iron sulfide which when present in concrete aggregate may lead to expansive reactions, cracks and finally disintegration of the concrete. This potential risk when using aggregates containing sulfides in ... -
Requirements and recommendations to frost durable concrete – an overview
(Chapter, 2019)Requirements and recommendations for frost durable concrete from standards and specifications from Europe, North-America and Asia, various international organizations and construction projects are reviewed, compared and ... -
Risk-based Design of an Offshore Wind Turbine using VoI Analysis
(Chapter, 2019)Monopiles are the most common solution for supporting wind turbines in offshore conditions. At the design phase of a monopile, a frequency check is to be performed to avoid the resonance hazard with the 1P and 3P excitation, ... -
SEM-EDS analysis of products formed under natural and accelerated carbonation of concrete with CEM I, CEM II/B-M and CEM II/B-V
(Chapter; Peer reviewed, 2017)Carbonation resistance of concrete is usually tested under accelerated conditions, i.e. by elevating the CO2 concentration compared to natural conditions and keeping the RH close to 60%. However, it is not clear if these ... -
Simulation of blast-loaded aluminium plates with crack-like defects
(Chapter, 2019)This paper presents a numerical study on the response of blast-loaded AA6016 T4 aluminium plates with crack-like defects. Explicit finite element simulations were performed with LS-DYNA, using an uncoupled plasticity and ...