Blar i Institutt for konstruksjonsteknikk på tittel
Viser treff 1752-1771 av 2483
-
Numerical studies of mitral valve regurgitation
(Master thesis, 2011)Mitral regurgitation (MR) has been studied through the use of computational fluid dynamics (CFD).The ambition of the work is to improve understanding of mitral regurgitation fluid dynamics in order to improve quantification ... -
Numerical studies on ductile failure of aluminium alloys
(Doctoral theses at NTNU;2017:284, Doctoral thesis, 2017)Numerical modelling and simulation are becoming increasingly important for structural design and assessment, and they are essential tools for engineers facing the challenges and demands imposed by the modern society. Using ... -
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 ... -
A numerical study of a size-dependent finite-element based unit cell with primary and secondary voids
(Peer reviewed; Journal article, 2021)Aluminium alloys contain various types of intermetallic particles with different sizes, such as constituent particles and dispersoids. The main mechanism of ductile fracture in these materials is assumed to be nucleation ... -
Numerical study of ductile failure under non-proportional loading
(Journal article; Peer reviewed, 2019)This paper investigates two numerical methods for predicting the initiation of ductile failure under moderately and strongly non-proportional loading paths. Two distinct phenomena are considered as indicators for the ... -
Numerical study of fillet welds subjected to quasi-static and impact loading
(Journal article; Peer reviewed, 2017)Fillet welding is widely used in connections in civil engineering and marine structures. Thus, understanding the behavior of fillet welds under various types of loading is important, and numerical simulations can provide ... -
Numerical study of hydrogen influence on void growth at low triaxialities considering transient effects
(Peer reviewed; Journal article, 2019)Assuming that hydrogen enhances localised plasticity, as one of the leading mechanisms proposed in the lit- erature, the void growth and coalescence are modified by local softening and ductile failure features depend on ... -
A Numerical Study on Ductile Failure of Porous Ductile Solids With Rate-Dependent Matrix Behavior
(Peer reviewed; Journal article, 2020)This work examines the effects of loading rate on the plastic flow and ductile failure of porous solids exhibiting rate-dependent behavior relevant to many structural metals. Two different modeling approaches for ductile ... -
Numerical Study on Ductile-to-Brittle Transition of Steel and its Behavior under Residual Stresses
(Doctoral theses at NTNU;2019: 227, Doctoral thesis, 2019)The transition of fracture mode from ductile to brittle (DBT) is a crucial phenomenon of structural materials, e.g. body centered cubic (BCC) metals, which are normally brittle at low temperatures or high loading rates, ... -
Numerical study on the effect of the Lüders plateau on the ductile crack growth resistance of SENT specimens
(Journal article, 2018)The increasing demand of energy prompts the petroleum industry exploitation activities to the Arctic region where the low temperature is a strong challenge, both for structural design and material selection. For structural ... -
A numerical study on the effects of DP steel microstructure on the yield locus and the stress–strain response under strain path change
(Journal article; Peer reviewed, 2023)The mechanical response of dual phase (DP) steel exhibits a complex dependence on the microstructure. The chemical composition and microstructure characteristics of the phases have significant effects on the contrast between ... -
Numerical study on the influence of cover thickness and rebar spacing on effective areas in reinforced concrete ties
(Master thesis, 2020)Nøyaktige estimater av rissdannelse, -fordeling, -vidde og påvirkningen dette har på konstruksjoner er essensielt for å dimensjonere for tiltenkt levetid. Formålet med denne oppgaven er å gjennomføre endelige elementanalyser ... -
Numerical study on the influence of cover thickness and rebar spacing on effective areas in reinforced concrete ties
(Master thesis, 2020)Nøyaktige estimater av rissdannelse, -fordeling, -vidde og påvirkningen dette har på konstruksjoner er essensielt for å dimensjonere for tiltenkt levetid. Formålet med denne oppgaven er å gjennomføre endelige elementanalyser ... -
Numerical study on the strain capacity of girth-welded X80 grade pipes
(Peer reviewed; Journal article, 2022)Strain capacity is an important performance indicator for designing and evaluating high-grade steel pipelines. Due to the inhomogeneity of material properties in welded structures, girth welds are one of the main factors ... -
Numerical study on the structural response of blast-loaded thin aluminium and steel plates
(Journal article; Peer reviewed, 2016)The inelastic response of thin aluminium and steel plates subjected to airblast loading is studied numerically and validated against experimental data. Special focus is placed on the influence of elastic effects and negative ... -
Numerisk analyse av sprekkutviklingen i tre med kohesive elementer basert på empiriske resultater.
(Master thesis, 2018)Denne oppgaven er en del av et nytt forskningsprosjekt ved NTNU med mål på kunne skape en akseptabel numerisk modell av sprekkbrudd i tre, ved bruk av kohesive elementer. Oppgaven går inn på å utvikle et testoppsett og ... -
Numerisk og eksperimentell studie av momentkapasiteten til X-knutepunkt med sentrisk og eksentrisk plasserte rektangulære hulprofiler
(Master thesis, 2023)I denne studien blir det sett på sveiste X-knutepunkt av rektangulære hulprofiler (RHS). Knutepunktet belastes med et like stort og motsatt rettet ut-av-planet bøyemoment i hver sekundærbjelke. Å kunne beskrive oppførselen ... -
Numerisk og eksperimentell studie av momentkapasiteten til X-knutepunkt med sentrisk og eksentrisk plasserte rektangulære hulprofiler
(Master thesis, 2023)I denne studien blir det sett på sveiste X-knutepunkt av rektangulære hulprofiler (RHS). Knutepunktet belastes med et like stort og motsatt rettet ut-av-planet bøyemoment i hver sekundærbjelke. Å kunne beskrive oppførselen ... -
Numerisk simulering av ikkelineær oppførsel av armert betong
(Master thesis, 2014)SammendragDenne rapporten handler i hovedsak om å bruke numerisk simulering av ikke lineær oppførsel av armert betong. Numerisk simuleringen har blitt utført ved hjelp av simuleringsprogrammer; DIANA og Abaqus. Hensikten ...