Results 61 to 70 of about 312,116 (298)

Comparative Study of Friction Models in High-Speed Machining of Titanium Alloys

Lubricants
Friction has a significant impact on chip formation, so modeling it accurately is crucial in numerical cutting simulations. However, there is still controversy regarding the application scope and effectiveness of various friction models.
Fan Yi, Ruoxi Zhong, Wenjie Zhu, Run Zhou, Li Guo, Ying Wang   +5 more
doaj   +1 more source

A modified Parametric Forcing Approach for modelling of roughness [PDF]

, 2018
Surface roughness in turbulent channel flow is effectively modelled using a modified version of the Parametric Forcing Approach introduced by Busse and Sandham (2012).
Busse, Angela, Forooghi, Pourya, Frohnapfel, Bettina, Magagnato, Franco   +3 more
core   +2 more sources

Mathematical Model of Friction Coefficient Determination for Lubricated Surfaces

Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference, 2015
<p class="R-AbstractKeywords"><em><span lang="EN-GB">This article reviews mathematical model for the determination of friction coefficient for lubricated surfaces which operate works at sliding friction pairs in boundary lubrication case. In the particular model an absolutely smooth ball and rough surface contact is viewed taking into
Leitans, Armands, Lungevics, Janis
openaire   +4 more sources

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

Advanced Engineering Materials, EarlyView.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek, Jakub Hurník, Miroslav Šmíd, Ondřej Zobač, Melanie Todt, Daniel Koutný   +5 more
wiley   +1 more source

Recent developments in finite element simulations of the deep drawing process [PDF]

, 1997
Some new developments in a finite element code for the deep drawing process are presented\ud in this paper. First the phenomenon of friction is treated.
Carleer, B.D., Huetink, J., Meinders, T., Vegter, H.   +3 more
core   +1 more source

On the Influence of Antioxidants and Recycled MgO–C Source Material on the Mechanical Properties of Carbon‐Bonded Magnesia Refractories

Advanced Engineering Materials, EarlyView.
The presented study focuses on the fracture behaviour of carbon‐bonded magnesia MgO–C refractories, where environmentally friendly fructose, collagen and lignin serve as temporary binding agents. The partial substitution of the source material with recycled MgO–C reduces the fracture resistance, which can be counteracted by the additional introduction ...
Marc Neumann, Tom Weber, Jana Hubálková, Florian Kerber, Dinesh Kumar Gunasekar, Hans Jelitto, Christos G. Aneziris   +6 more
wiley   +1 more source

Tire-pavement friction modeling considering pavement texture and water film

International Journal of Transportation Science and Technology
The accurate estimation of tire-pavement friction, especially under wet conditions, is critical to ensure pavement safety. For this purpose, this paper develops a modified tire-pavement friction model which takes the effect of pavement texture and water ...
Lanruo Zhao, Hongduo Zhao, Juewei Cai
doaj   +1 more source

Mean Field theory for a driven granular gas of frictional particles

, 2000
We propose a mean field (MF) theory for a homogeneously driven granular gas of inelastic particles with Coulomb friction. The model contains three parameters, a normal restitution coefficient $r_n$, a maximum tangential restitution coefficient $r_t^m ...
Foerster, Huthmann, Jenkins, Kudrolli, Luding, Luding, Luding, Luding, Mazighi, McNamara, Olafsen, Raffaele Cafiero, Stefan Luding, van Noije, van Noije, Verlet, Walton   +16 more
core   +2 more sources

Volume correction for bead model simulations of rotational friction coefficients of macromolecules [PDF]

The Journal of Physical Chemistry, 1989
Correction du modele bille de Kirkwood et Riseman par l'introduction de «volumes accessibles au solvant» definis comme la somme des «cones» de billes relies a la surface accessible au solvant. Application au calcul des cofficients de diffusion rotationnelle et translationnelle de spheres et de cylindres; resultats en accord avec les resultats ...
Antosiewicz, J., Porschke, D.
openaire   +2 more sources

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source