Blar i Institutt for konstruksjonsteknikk på tittel
Viser treff 2064-2083 av 2463
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Seismic considerations in design of offshore wind turbines
(Journal article; Peer reviewed, 2018)Interest in renewable and clean energy over the past decade has motivated immense research on wind energy. The main issues in design of offshore wind turbines in regions of recent development have been aero- and hydro-dynamic ... -
Seismic response of floating wind turbines due to seaquakes
(Peer reviewed; Journal article, 2022)Vertical seismic waves, which are primarily due to pressure waves in the ground, can propagate with the same intensity in the seawater and impact floating bodies such as floating wind turbines (FWTs). Part of this wave can ... -
Seismic response of subsea structures on caissons and mudmats due to liquefaction
(Peer reviewed; Journal article, 2021)This paper presents a numerical study to investigate the seismic behavior of mudmat and caisson foundations supporting subsea structures, such as manifolds, in liquefiable sand. In seismic areas, substantial earthquake ... -
Seismic response of subsea structures on caissons and mudmats due to liquefaction
(Peer reviewed; Journal article, 2021)This paper presents a numerical study to investigate the seismic behavior of mudmat and caisson foundations supporting subsea structures, such as manifolds, in liquefiable sand. In seismic areas, substantial earthquake ... -
Seismic Response of Wind Turbines: Dynamic Analysis of a Wind Turbine in Horizontal and Vertical Direction - Subject to Earthquake, Wind & SSI
(Master thesis, 2013)For a numerical model of a 5-MW wind turbine, it is shown that vertical excitation from earthquake can produce severe response in the upper parts of the tower. Furthermore, for horizontal excitation it is shown that mainly ... -
Seismic Response of Wind Turbines: Time Domain Simulations Including SSI
(Master thesis, 2014)This thesis presents the time-domain seismic response of a parked wind turbine with a skirted foundation exposed to soil-structure interaction. The wind turbine is discretized using the finite element program ABAQUS/CAE ... -
Seismic Response of Wind Turbines: Time domain simulations, including SSI
(Master thesis, 2014)In this study, a numerical model of a 5MW offshore wind turbine on a monopile foundation was created in order to calculate the dynamic response of the structure including soil-structure interaction. The main focus was to ... -
Selective growth of metallic nanostructures on microstructured copper substrate in solution
(Journal article; Peer reviewed, 2015)Selective growth of metallic micro/nanostructures on desired micropatterns was achieved via a simple solution-immersion process. Interestingly, metallic micro/nanostructures directly grow only inside hollow copper micropatterns ... -
Self-assembled superstructures of magnetic nanoparticles: advanced nanofabrication and enhanced mechanical properties
(Doctoral theses at NTNU;2020:271, Doctoral thesis, 2020)Artificial materials composed of self-assembled magnetic nanoparticles (i.e. magnetic superstructures) have attracted immense scientific interest in the past two decades due to their extraordinary collective behavior. An ... -
Self-deicing Electrolyte Hydrogel Surfaces with Pa-level Ice Adhesion and Durable Anti-freezing/frost Performance
(Peer reviewed; Journal article, 2020)Despite the remarkable advances in mitigating ice formation and accretion, however, no engineered anti-icing surfaces today can durably prevent frost formation, droplet freezing and ice accretion in an economical and ... -
Self-healing and Chloride Ingress in Cracked Cathodically Protected Concrete Exposed to Marine Environment for 33 Years
(Research report, 2019)Cracks facilitate ingress of aggressive substances. Depending on the exposure, this might lead to early reinforcement corrosion initiation. Possible self-healing of cracks may reduce their long-term impact, and conditions ... -
Self-induced cracking problems in hardening concrete structures
(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 ... -
Selvborrende skruer som forsterking i utsparte limtrebjelker: Eksperimentelle tester og analytiske betraktninger
(Master thesis, 2011)Oppgaven baseres på en studie av 100 forskjellige testbjelker med dimensjoner B=36, H=300, L=4200[mm] levert fra Kjelstad Sag i Selbu. Målet var å få et større grunnlag for dimensjonering av limtrebjelker med store ... -
Selvreparasjon og påvirkningen av riss på armeringens tilstand i opprisset betong - Undersøkelser av bjelker eksponert i marint miljø i 25 år
(Master thesis, 2018)I dette prosjektet er det studert langtidsdata for tre bjelker som har stått eksponert marint i tidevannssonen i 25 år. Bjelkene har ulike betongresepter med ulikt innhold av bindemidler, henholdsvis 4,2 % silikastøv, 3,5 ... -
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 ... -
Sensitivity in the dynamic response estimation of pantograph-catenary interaction, due to time step and cut-off frequency - A numerical study
(Master thesis, 2017)This thesis investigates the sensitivity in the dynamic response when simulating the pantograph-catenary interaction due to time step and cut-off frequency. In addition, the contact formulation stated in standard EN50318 ... -
Sensitivity-based finite element model updating of a pontoon bridge
(Journal article, 2017)Numerical models of large civil engineering structures are prone to errors and uncertain system parameters, which inevitably affect the ability of such models to accurately predict dynamic behavior. Finite element (FE) ... -
Settlements at several masts of the power line constructed on sedimentary permafrost deposits in Sisimiut, West-Greenland: Field- and lab work, data processing and thermal modelling
(Master thesis, 2023)The electricity of Greenland’s second largest town, Sisimiut (West -Greenland), is supplied by a hydropower plant, located some 20 km north from the town. In late 2021, Nukissiorfiit – the Greenland public utilities company ... -
Shape and Size of Particles Scaled from Concrete Surfaces during Salt Frost Testing and Rapid Freeze/thaw in Water
(Peer reviewed; Journal article, 2021)Thickness (T), Length (L), Width (W) and size distribution of scaled concrete particles in frost testing were measured. T (mm) increases with particle size surprisingly similarly for different concrete qualities and frost ... -
Shape optimization of an aluminium girder for a long-span suspension bridge: Aerodynamic stability, buffeting response and suppression of vortex induced vibrations
(Master thesis, 2021)Det er planlagt å bygge en hengebro over Langenuen som en del av målsetningen om å bygge ferjefri E39 langs kysten av Vest-Norge. Det planlagte konseptet av broen inkluderer et hovedspenn på 1220 m, som vil gjøre den til ...