• Numerical implementation of a non-local GTN model for explicit FE simulation of ductile damage and fracture 

  Bergo, Sondre; Morin, David; Hopperstad, Odd Sture (Journal article, 2021)

  In this study, we follow the work of Tvergaard and Needleman (1995, 1997) and Needleman and Tvergaard (1998) and present the numerical implementation and initial applications of a non-local Gurson-Tvergaard-Needleman (GTN) ...

• Micromechanics-based identification of a ductile fracture model for three structural steels 

  Bergo, Sondre; Morin, David; Børvik, Tore; Hopperstad, Odd Sture (Journal article, 2020)

  From an engineering point of view, it is beneficial to reduce the number of mechanical tests required to calibrate the plasticity and fracture models of a structural material. In this study, the ductile fracture model for ...

• Pure Mode I Fracture Toughness Determination in Rocks Using a Pseudo‑Compact Tension (pCT) Test Approach 

  Muñoz-Ibáñez, Andrea; Delgado-Martín, Jordi; Costas, Miguel; Rabuñal-Dopico, Juan; Alvarellos-Iglesias, Jose; Canal-Vila, Jacobo (Journal article, 2020)

  Mode I fracture toughness (KIC) quantifies the ability of a material to withstand crack initiation and propagation due to tensile loads. The International Society for Rock Mechanics (ISRM) has proposed four suggested methods ...

• Impact of electrodialytic remediation of MSWI fly ash on hydration and mechanical properties of blends with Portland cement 

  Ebert, Benjamin A. R.; Geiker, Mette Rica; Kunther, Wolfgang; Kirkelund, Gunvor M. (Peer reviewed; Journal article, 2021)

  Municipal solid waste incineration (MSWI) residues such as fly ash and air pollution control (APC) residues may serve as new supplementary cementitious materials (SCM). These SCMs may, however, require a pre-treatment to ...

• Simplified computational methods for estimating dynamic impedance of batter pile groups in homogeneous soil 

  Cemalovic, Miran; Husebø, Jan Bernt; Kaynia, Amir M. (Peer reviewed; Journal article, 2021)

  A simplification of existing analytical solutions together with an extended hybrid model is proposed for estimating the horizontal impedance of batter pile groups subjected to harmonic loading. The solutions are given ...

• Mechanical Response of Nanocrystalline Ice-Contained Methane Hydrates: Key Role of Water Ice 

  Cao, Pinqiang; Ning, Fulong; Wu, Jianyang; Cao, Boxiao; Li, Tianshu; Sveinsson, Henrik Andersen; Liu, Zhichao; Vlugt, Thijs J.H.; Hyodo, Masayuki (Peer reviewed; Journal article, 2020)

  Water ice and gas hydrates can coexist in the permafrost and polar regions on Earth and in the universe. However, the role of ice in the mechanical response of ice-contained methane hydrates is still unclear. Here, we ...

• FOAM INDEX MEASUREMENTS ON MIXES OF AIR ENTRAINING AGENTS, SUPERPLASTICIZERS AND FLY ASH-CEMENT- FILLER BLENDS 

  Jacobsen, Stefan; Nordahl-Pedersen, Henrik; Omer Rasol, Hawar; Lødemel, Øyvind Olsen; Tunstall, Lori; Scherer, George W. (Chapter, 2016)

  Foam Index (FI) measurements were made to investigate the foaming efficiency of different AEAs with varying cements (OPC, blended), fly ashes (FA) and fillers, and the effect on foaming of mixing sequence of AEA and SP. ...

• Formation of shlykovite and ASR-P1 in concrete under accelerated alkali-silica reaction at 60 and 80 °C 

  Shi, Zhenguo; Park, Solmoi; Lothenbach, Barbara; Leemann, Andreas (Peer reviewed; Journal article, 2020)

  Three types of alkali-silica reaction (ASR) products, i.e., crystalline K-shlykovite, Na-shlykovite and nano-crystalline ASR-P1, have recently been synthesized at 80 °C. It is critical to verify the formation of these ASR ...

• Machine learning augmented reduced-order models for FFR-prediction 

  Fossan, Fredrik Eikeland; Müller, Lucas O.; Sturdy, Jacob; Bråten, Anders Tjellaug; Jørgensen, Arve; Wiseth, Rune; Hellevik, Leif Rune (Peer reviewed; Journal article, 2021)

  Computational predictions in cardiovascular medicine have largely relied on explicit models derived from physical and physiological principles. Recently, the application of artificial intelligence in cardiovascular medicine ...

• Freezing induced stresses in concrete-steel composite beams and effect of air voids 

  Jacobsen, Stefan; Scherer, George W. (Chapter, 2016)

  The thermal expansion match between concrete and steel is lost when freezing occurs, owing to enhanced shrinkage caused by cryosuction in the pore solution and the high coefficient of thermal expansion (CTE) of ice. Freezing ...

• A theoretical study of the dynamic response of planar timber frames with semi-rigid moment-resisting connections subjected to wind loads 

  Cao, Alex Sixie; Stamatopoulos, Haris (Peer reviewed; Journal article, 2021)

  The dynamic response of semi-rigid timber frames subjected to wind loads is investigated numerically in this paper. The dynamic response of more than one million unique frames with different parameters was assessed with ...

• Aerodynamic damping models for vortex-induced vibration of a rectangular 4: 1 cylinder: Comparison of modeling schemes 

  Zhang, Mingjie; Xu, Fuyou; Øiseth, Ole Andre (Peer reviewed; Journal article, 2020)

  Accurate modeling of vortex-induced force acting on a structure is of great significance to precisely evaluate its vortex-induced vibration (VIV). This paper systematically compares the capabilities of five aerodynamic ...

• Ikke-lineære seismiske analyser av plane, momentstive trerammer med duktile søyle-bjelke forbindelser 

  Ruud, Audun; Øverås, Vegard (Master thesis, 2020)

  Sammendrag Denne masteroppgaven er en del av forskningsprosjektet Woodsol. Hensikten med oppgaven er å utvikle stålforbindelser til momentstive trerammer, som er duktile nok til å motstå jordskjelv. Oppgaven bygger videre ...

• A Parametric Study of Hinged Hangers in Network Arch Timber Bridges 

  Halse, Andreas (Master thesis, 2019)

  Nettverksbuebroer er brukonstruksjoner som kan krysse store spenn der det kreves mindre nødvendig materiale sammenlignet med andre brukonsepter grunnet den veldig gunstige lastfordelingen som oppnås. De fleste nettverksbuebroer ...

• Påbygg av tre i høyden på Sentralbygg 1 

  Fjell, Anders; Holm, Jan Erik Edvardsen (Master thesis, 2020)

  SiT ønsker å utvikle et urbant campus hvor man lærer, opplever og lever. Det er et ønske om å endre bruken av Sentralbyggene på NTNU fra kontorbygg til studenthybler. I lys av dagens fokus på byfortetting og bærekraftig ...

• Påbygg av tre i høyden på Sentralbygg 1 

  Fjell, Anders; Holm, Jan Erik Edvardsen (Master thesis, 2020)

  SiT ønsker å utvikle et urbant campus hvor man lærer, opplever og lever. Det er et ønske om å endre bruken av Sentralbyggene på NTNU fra kontorbygg til studenthybler. I lys av dagens fokus på byfortetting og bærekraftig ...

• Beregningsregler i Eurokode 2 

  Glemmestad, Pål (Master thesis, 2020)

  Arbeidet rundt den revidert utgaven av Eurokode 2 er i full gang, og denne er snart klar for avstemning blant medlemslandene i CEN. Etter ønske fra den internasjonale komiteen er det i denne oppgaven gjort en sammenligning ...

• Experimental and numerical study on the static and dynamic behaviour of notched square hollow sections made of three different types of S355 

  Johannessen, Håkon; Johannessen, Oddvar Hestetræet (Master thesis, 2020)

  Denne studien sammenligner den mekaniske oppførselen til kvadratiske hulprofiler, produsert av tre ulike S355-kvaliteter: kaldformet, varmvalset og offshore stål. Basert på kvasistatiske enaksielle strekktester, ble en ...

• Experimental and numerical study on the static and dynamic behaviour of notched square hollow sections made of three different types of S355 

  Johannessen, Håkon; Johannessen, Oddvar Hestetræet (Master thesis, 2020)

  Denne studien sammenligner den mekaniske oppførselen til kvadratiske hulprofiler, produsert av tre ulike S355-kvaliteter: kaldformet, varmvalset og offshore stål. Basert på kvasistatiske enaksielle strekktester, ble en ...

• Modelling of heat-affected zones in aluminium structures 

  Tangen, Alexander (Master thesis, 2020)

  Introduksjon Forstå oppførselen til varmepåvirkede områder i en konstruksjon er viktig for strukturingeniører. Målet med denne masteroppgaven er å evalurere ulike metoder for å modellere disse varmepåvirkede sonene i ...

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