Blar i Fakultet for ingeniørvitenskap (IV) på tittel
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ISLAST MOT DAMMER MED VARIERENDE VANNSTAND
(Master thesis, 2017)I dag blir mange gravitasjonsdammer av mur og betong rehabilitert fordi de ikke lenger er beregnet som stabile. Lave dammer av denne damtypen vil være spesielt utsatt for islast, da lasten vil skape et stort moment ved ... -
Islaster på en FPSO
(Master thesis, 2019)Denne masteroppgaven forklarer hvordan ekstreme islaster påvirker skroget på en FPSO lokalisert i isbelagte områder. En omfattende studie av isteori ble utført. Kunnskap om isfysikk og ismekanikk er viktig for å bedre kunne ... -
Isogeometric Analysis of Coupled Problems in Porous Media
(Doctoral theses at NTNU;2016:140, Doctoral thesis, 2016)Computational modeling of coupled problems in porous media is essential in various disciplines of science and engineering. The porous media of interest here are soils subjected to different physical processes. In particular, ... -
Isogeometric analysis of finite deformation nearly incompressible solids
(Peer reviewed; Journal article, 2011)This paper addresses the use of isogeometric analysis to solve finite deformationsolid mechanics problems, in which volumetric locking may be encountered. The current workis based on the foundation developed in the project ... -
Isogeometric Analysis of Thermo-Hydro-Mechanically Coupled Processes in Soil
(Master thesis, 2016)This thesis conducts numerical studies on THM (Thermo-Hydro-Mechanically) coupled problems, using isogeometric elements and two models created at NTNU. One model is for fully saturated porous media, and the second is ... -
Isogeometric analysis of THM coupled processes in ground freezing
(Journal article; Peer reviewed, 2017)An isogeometric analysis (IGA) based numerical model is presented for simulation of thermo-hydro-mechanically (THM) coupled processes in ground freezing. The momentum, mass and energy conservation equations are derived ... -
Isogeometric analysis with trimmed geometries applied to ship hulls
(Master thesis, 2018)This Paper aims to investigate Trimmed NURBS surfaces for Isogeometric Analysis(IGA). NURBS are Non-Rational B-spline functions which are widely used for geometric modelling in most Computer aided Design programs. This is ... -
Isogeometric collocation for implicit dynamics of three-dimensional beams undergoing finite motions
(Journal article; Peer reviewed, 2019)We propose a novel approach to the implicit dynamics of shear-deformable geometrically exact beams, based on the isogeometric collocation method combined with the Newmark time integration scheme extended to the rotation ... -
Isogeometric collocation for the Reissner–Mindlin shell problem
(Journal article; Peer reviewed, 2017)We present an isogeometric collocation formulation for the Reissner-Mindlin shell problem. After recalling the necessary basics on differential geometry and the shell governing equations, we show that the standard approach ... -
Isogeometric contact analysis: Implementation of a penalty based algorithm
(Master thesis, 2019)Strukturanalyse av gjensander som kommer i kontakt med hverandre er komplisert. Kontaktproblemer er ofte relatert til store deformasjoner og ettersom kontaktoverflaten ikke er kjent på forhånd, er de uunngåelig ikke-lineære. ... -
Isogeometric Finite Element Analysis based on Bézier Extraction of NURBS and T-splines
(Master thesis, 2011)This thesis will give a theoretical overview of B-splines, as well as NURBS and T-splines which are based on B-splines, and also the concept of Bézier decomposition of these spline functions. Bézier decomposition will ... -
Isogeometric Finite Element Analysis based on Bézier Extraction of NURBS and T-Splines
(Master thesis, 2011)Data transmission between finite element analysis (FEA) and computer-aided design (CAD) is ahuge bottle-neck today. Therefore, isogeometric analysis has been introduced with aim to merge these fields. While FEA utilizes ... -
An isogeometric finite element-boundary element approach for the vibration analysis of submerged thin-walled structures
(Peer reviewed; Journal article, 2021)In this paper, the isogeometric formulations of the finite element and boundary element methods are applied to the dynamic analysis of thin-walled structures submerged in an infinite, inviscid, and incompressible fluid ... -
Isogeometric Kirchhoff-Love shell formulation for elasto-plasticity
(Journal article; Peer reviewed, 2018)An isogeometric thin shell formulation allowing for large-strain plastic deformation is presented. A stress-based approach is adopted, which means that the constitutive equations are evaluated at different integration ... -
Isogeometric methods for CFD and FSI-simulation of flow around turbine blades
(Journal article; Peer reviewed, 2015)Coupled fluid-structure interaction simulations of wind turbines have traditionally been considered computationally too expensive to carry out. However, more powerful computers and better solution techniques based on ... -
Isogeometric Modeling and Experimental Investigation of Moving-Domain Bridge Aerodynamics
(Journal article; Peer reviewed, 2019)Computational fluid dynamics (CFD) and fluid–structure interaction (FSI) are growing disciplines in the aeroelastic analysis and design of long-span bridges, which, with their bluff body characteristics, offer major ... -
Isogeometric Phase-Field Methods for Modeling Fracture in Shell Structures
(Doctoral theses at NTNU;2021:87, Doctoral thesis, 2021)The simulation of the fracture of engineering structures is a challenging topic that requires accurate and efficient numerical models. This thesis focuses on the modeling of brittle and ductile fracture in thin shell structures ... -
Isogeometric Structural Analysis of Wind Turbine Blades
(Master thesis, 2018)Isogeometric analysis, IGA, seeks to bridge the gap between engineering design and computational analysis by using spline functions as finite element bases in the analysis framework. The general concept can be applied to ... -
Isolasjon; Trefiber vs mineralull Sammenlikning og vurdering av måleresultater fra test-hus på Huntonstranda samt livsløpsvurderinger
(Bachelor thesis, 2021)Oppgaven undersøker om trefiberisolasjonens hygrotermiske egenskaper vil påvirke varmegjennomgangen og redusere energibehov i bygg. Dette er gjort gjennom litteraturstudie og analyse av måleresultater fra testhus etablert ... -
ISRM Suggested Method for Determining the Basic Friction Angle of Planar Rock Surfaces by Means of Tilt Tests
(Peer reviewed; Journal article, 2018)The basic friction angle plays a key role when estimating the shear strength of discontinuities for rock engineering projects, since a large body of research has shown that rock joint shear strength models that consider ...