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Nullalternativet som ingen vil ha, men ofte ender med å få
(Journal article; Peer reviewed, 2023)Hvorfor mange samfunnsøkonomiske analyser ender med anbefaling om milliardprosjekt, som senere blir lagt på is fordi det ble for dyrt. -
Nullalternativets rolle i konseptvalgutredninger
(Concept rapport;71, Report, 2023)Rapporten ser på håndteringen av null- og nullplussalternativene i konseptvalgutredninger (KVU). Vi finner at nullalternativet ofte ikke utredes som et valgbart alternativ, men kun tas med som sammenligningsgrunnlag. Videre ... -
Numerical and Experimental Analysis of General Mixed Mode I/II/III Fracture of Polymethyl Methacrylate
(Master thesis, 2018)Mixed mode loading often has a significant effect on fracture behaviour in components. Cracks is in many cases the reason for failure or fracture of a component. All of the mechanisms of cracks and fracture behaviour are ... -
Numerical and experimental characterization of a rubber damping tool component
(Master thesis, 2015)As computer technology develops, one can simulate more complex systems by using CAE-software. Sandvik Teeness, a world leading manufacturer of damped machining tools, wants to investigate the possibility of utilizing CAE ... -
Numerical and Experimental Fretting Fatigue Testing Using a New Test Rig
(Master thesis, 2019)Fretting er begrepet som brukes til å beskrive tilstanden som oppstår når to overflater i kontakt med oscillerende bevegelser i forhold til hverandre opplever skader i overflaten. Når denne tilstanden holdes over tid, ... -
Numerical and experimental fretting fatigue with application to engineering design
(Doctoral theses at NTNU;2021:229, Doctoral thesis, 2021)Fretting is a term covering a wide array of physical phenomena. When contacting bodies vibrate, relative slip between the bodies cause surface damage including wear and plasticity and cracks. Partially stuck contacts with ... -
Numerical and Experimental Investigation of Impact Behaviour of GFRP Composites
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:109, Doctoral thesis, 2014)Composites are more susceptible to impact damage than metals. While a metal structure can dissipate impact energy by yielding (plasticity), composites dissipate energy by developing damage, mainly matrix cracking, delamination ... -
Numerical assessment on a novel bio-inspired joint under complex loading.
(Master thesis, 2024)For å møte etterspørselen etter stadig større overflater i arkitektonisk ingeniør- og konstruksjonsindustri (AEC), er forskningsinnsatsen rettet mot utvikling av forskjellige teknologiske løsninger for installasjon av ... -
Numerical Evaluation of T-stress under Mixed Mode Loading Through the Use of Coarse Meshes
(Journal article; Peer reviewed, 2018)The present paper investigates the employment of coarse meshes in evaluating the T-stress with the displacement method. Several finite element analyses have been carried out with different mesh refinements and accuracies. ... -
Numerical Failure Analysis of a Carbon Fiber Composite Ring Sleeve for a High-Speed Rotor
(Master thesis, 2020)Å begrense de økende utslippene fra kommersiell luftfart har blitt en global prioritering. For å møte kravene om redusert miljøpåvirkning, forskes det for tiden på hybrid-elektriske flyteknologi. Denne oppgaven undersøker ... -
Numerical Failure Analysis of a Carbon Fiber Composite Ring Sleeve for a High-Speed Rotor
(Master thesis, 2021)Denne master oppgaven omhandler en studie av en karbonfiber hylse. Denne hylsen har som funksjon å holde på plass en rotorkonstruksjon som sitter i en elektrisk motor. Oppgaven er skrevet i samarbeid med Nils Petter ... -
Numerical Investigation of Strength Mismatch Effect on Ductile Crack Growth Resistance in Welding Pipe
(Peer reviewed; Journal article, 2020)The effect of strength mismatch (ratio between the yield stress of weld metal and base metal, My) on the ductile crack growth resistance of welding pipe was numerically analyzed. The ductile fracture behavior of welding ... -
Numerical investigation on the compressive behaviors of Islamic geometric patterns inspired architectured material
(Master thesis, 2023)De bemerkelsesverdige mekaniske ytelsene til arkitektonerte materialer—komponert av nøye designet byggeklosser - har mottatt økende interesser fra vitenskap og ingeniørfag samfunnet de siste tiårene. Blant arkitektoniske ... -
Numerical modelling of flow over spillways
(Master thesis, 2010)The spillway of Sarpfossen hydropower plant has been studied numerically and experimentally. The physical model was built in the Vassdragslaboratoriet at the Norwegian University of Science and Technology, NTNU. The model ... -
Numerical modelling of residual stress redistribution induced by TIG-dressing
(Peer reviewed; Journal article, 2019)TIG-dressing is a technique used to improve the fatigue strength of welded joints by a remelting of the weld toe region that promotes both a smoother transition between the plate and the weld crown and a residual stress ... -
Numerical Modelling of Sediment Flow in Tala Desilting Chamber
(Master thesis, 2005)This thesis is about estimation of trap efficiency of desilting basin using numerical model program named as SSIIM. SSIIM is acronym for Sediment Simulation in Intakes with Multiblock Option. It is developed by Dr. Nils ... -
Numerical Modelling of Separation Efficiency of Sediments in a Combined Sewer Overflow (CSO)
(Master thesis, 2012)Combined sewer overflows (CSOs) are a part of the combined storm water and foul sewer system. CSOs should protect the downstream sewer system against overloading during heavy rainfall and snow melting. This report investigates ... -
Numerical Simulation Comparing the Burridge-Knopoff and Burridge-Knopoff-Pad Model
(Master thesis, 2019)Denne masteroppgaven undersøker og analyserer data produsert fra gruppesimulering av Burridge-Knopoff og Burridge-Knopoff-Pad modellene. Sistnevnte, BKP modellen, er nylig utviklet og lite undersøkt, derfor er målet å ... -
NUMERICAL SIMULATION OF FATIGUE CRACK GROWTH
(Master thesis, 2012)The purpose of this study was to explore the posibilities and challenges with simulating fatigue crack growth (FCG) by the extended finite element method (XFEM). Another aim was to develope a procedure for XFEM FCG simulations ... -
Numerical simulations of material mismatch and ductile crack growth
(Doktoravhandlinger ved NTNU, 1503-8181; 2002:13, Doctoral thesis, 2002)Both the global geometry and inhomogeneties in material properties will influence the fracture behaviour of structures in presence of cracks. In this thesis numerical simulations have been used to investigate how some ...