Browsing NTNU Open by Author "Skallerud, Bjørn Helge"

3D patient-specific numerical modeling of the soft palate considering adhesion from the tongue

Liu, Hongliang; Prot, Victorien Emile; Skallerud, Bjørn Helge (Journal article; Peer reviewed, 2018)

Collapse of the soft palate in the upper airway contributes to obstructive sleeping apnea (OSA). In this study, we investigate the influence of the adhesion from the tongue on the soft palate global response. This is ...

A gradient-based multiaxial criterion for fatigue crack initiation prediction in components with surface roughness

Skallerud, Bjørn Helge; Ås, Sigmund Kyrre; Ottosen, Niels S. (Journal article, 2018)

The current study presents methods to predict the governing crack initiation site and fatigue crack initiation life of components with surface roughness. The surface topography is measured with white light interferometry ...

Abaqus explicit procedure to describe OPB behaviour in Mooring lines

Utklev, Jens Christian (Master thesis, 2015)

The procedure use data from model tests as input and calculate the local OPB stress field.

Adiponectin reduces bone stiffness; verified in a 3D artificial human bone model in vitro

Haugen, Sigrid; He, Jianying; Sundaresan, Alamelu; Stunes, Astrid Kamilla; Aasarød, Kristin Matre; Tiainen, Hanna; Syversen, Unni; Skallerud, Bjørn Helge; Reseland, Janne Elin (Journal article; Peer reviewed, 2018)

Primary human osteoblasts and osteoclasts incubated in a rotating coculture system without any scaffolding material, form bone-like tissue that may be used to evaluate effects of various compounds on mechanical strength. ...

An experimental and numerical study on the volume change of particle-filled elastomers in various loading modes

Ilseng, Arne; Skallerud, Bjørn Helge; Clausen, Arild Holm (Journal article; Peer reviewed, 2017)

Laboratory tests show that there is a pronounced difference in the volumetric response between uniaxial tension and confined axial compression loading for commercial particle-filled hydrogenated nitrile butadiene rubber ...

Assembly graphene platelets for bioinspired, stimuli-responsive, low ice adhesion surfaces

Fu, Yuequn; Xiao, Senbo; Skallerud, Bjørn Helge; Zhang, Zhiliang; He, Jianying (Peer reviewed; Journal article, 2022)

Design and fabrication of functional materials for anti-icing and de-icing attract great attention from both academic research and industry. Among them, the study of fish-scale-like material has been proved that enabling ...

Biomechanics of mitral valve leaflets: Second harmonic generation microscopy, biaxial mechanical tests and tissue modeling

Sadeghinia, MohammadJavad; Skallerud, Bjørn Helge; Holzapfel, Gerhard; Prot, Victorien Emile (Peer reviewed; Journal article, 2022)

Collagen fibers are the main load carrier in the mitral valve (MV) leaflets. Their orientation and dispersion are an important factor for the mechanical behavior. Most recent studies of collagen fibers in MVs lack either ...

Buckling initiation in layered hydrogels during transient swelling

Ilseng, Arne; Prot, Victorien Emile; Skallerud, Bjørn Helge; Stokke, Bjørn Torger (Journal article; Peer reviewed, 2019)

Subjected to compressive stresses, soft polymers with stiffness gradients can display various buckling patterns. These compressive stresses can have different origins, like mechanical forces, temperature changes, or, for ...

Crystal plasticity modeling of microstructure influence on fatigue crack initiation in extruded Al6082-T6 with surface irregularities

Hallberg, Håkan; Ås, Sigmund Kyrre; Skallerud, Bjørn Helge (Journal article, 2018)

The influence of surface roughness and microstructure heterogeneities in the vicinity of macroscopic stress concentrations are investigated by crystal plasticity simulations. It is shown that in the extruded Al6082-T6 alloy ...

Cyclic behavior and strain energy-based fatigue damage analysis of mooring chains high strength steel

P. Zarandi, Ershad; Skallerud, Bjørn Helge (Peer reviewed; Journal article, 2020)

This study investigates the low-cycle fatigue behavior of mooring chains high-strength steel grade R4 under different strain amplitudes and strain ratios at room temperature. A fatigue test program has been carried out on ...

Data on residual stresses of mooring chains measured by neutron diffraction and hole drilling techniques

P. Zarandi, Ershad; lee, tong; Skallerud, Bjørn Helge (Peer reviewed; Journal article, 2020)

Residual stresses in large offshore mooring chains have been measured for the first time and presented in this article. Two chain links with the same size and material, one only subjected to proof load and no cyclic service ...

Digital image correlation for continuous mapping of fatigue crack initiation sites on corroded surface from offshore mooring chain

Qvale, Paul; P. Zarandi, Ershad; Ås, Sigmund Kyrre; Skallerud, Bjørn Helge (Peer reviewed; Journal article, 2021)

The full-field digital image correlation (DIC) technique was used to identify crack initiation and early crack growth on irregular, corroded surfaces from offshore mooring chain. Finite element analysis was paired with the ...

Donnan Contribution and Specific Ion Effects in Swelling of Cationic Hydrogels are Additive: Combined High-Resolution Experiments and Finite Element Modeling

Zurzul, Natasa; Ilseng, Arne; Prot, Victorien Emile; Sveinsson, Hrafn Mar; Skallerud, Bjørn Helge; Stokke, Bjørn Torger (Journal article; Peer reviewed, 2020)

Finite element modeling applied to analyze experimentally determined hydrogel swelling data provides quantitative description of the hydrogel in the aqueous solutions with well-defined ionic content and environmental ...