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Fractal Prediction Model of Friction Coefficient in Dry Friction Pair
Advanced Materials Research, 2011To research the friction coefficient of rough surface under different contact loads. A mathematical model is proposed between the fractal parameters D and G and the non-dimensional real contact area based on M-B fractal contact model, surface profile curves are scanned by APE500 surface morphology, dimension change index k and size change index s are ...
Jun Jie Zhou, Shi Hua Yuan, Chao Wei
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Friction Coefficient Model of Friction Pair Composed of Automotive Brake Materials
Volume 4A: Dynamics, Vibration, and Control, 2014The friction experiments are conducted on a pin-on-disc friction material testing machine. The sliding velocity, pressure, temperature and friction coefficient are measured. The effects of brake temperature, brake pressure and braking speed on the friction coefficient are examined.
Zhishuai Wan +4 more
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Modelling of Friction Coefficient in Cold Strip Rolling
Materials Science Forum, 2006The variation of the friction in the roll bite is of great importance in cold strip rolling. The main interest of the paper is to model the friction coefficient in the roll bite during cold rolling. The deformation resistance of the rolled products and friction coefficient in the roll bite were determined simultaneously by minimizing the error of the ...
A. Kiet Tieu +5 more
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TWO-DIMENSIONAL VERTEX MODEL WITH LOCAL FRICTION COEFFICIENT
International Journal of Modern Physics B, 1989Time evolution of two-dimensional cellular structures is studied in the context of a deterministic vertex model. Simulating this model for long time periods we discuss two typical aspects of cellular structures. One is the asymptotic growth law of cell size and the other is concerned with the topological properties such as the cell shape distribution.
YOSHIHISA ENOMOTO +2 more
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Fractal Transition Model in Predicting Static Friction Coefficient
Multidiscipline Modeling in Materials and Structures, 2009There is a fractal characteristic in most engineering surfaces. Effects of the surface fractal parameters D, G and the material parameter φ on the static friction coefficient are discussed. The predicted static friction coefficient increases with the increase of normal load.
Sui Changfu, Sheng Xuanyu
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Low friction coefficient estimation for model material experiments
Wear, 1974Abstract A previously suggested method of estimating low friction coefficients from the bulk deformation of long rectangular laminae during plastic compression, was used for wax specimens with various lubricants to enable the choice of the best lubricant for experiments with model materials.
D.C. Fricker, T. Wanheim
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Static Friction Coefficient Model for Metallic Rough Surfaces
Journal of Tribology, 1988The friction force required to shear interface bonds of contacting metallic rough surfaces is calculated, taking into account the prestress condition of contacting asperities. The surfaces are modeled by a collection of spherical asperities with Gaussian height distribution.
W. R. Chang, I. Etsion, D. B. Bogy
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Experimental Measurement of Friction Coefficient Applied to HSM Modeling
Advanced Materials Research, 2011An experimental method using a specifically set-up is presented in order to investigate dry friction phenomena, which occurs in the cutting process at the tool chip contact, in a wide range of sliding speed. A ballistic set-up using an air gun launch is used to measure the friction coefficient for the steel/carbide contact between 15 m/s and 80 m/s.
Guy Sutter +4 more
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Friction coefficient of soft contact lenses: measurements and modeling
Tribology Letters, 2005Tribological conditions for contact lenses have very low contact pressures in the range 3–5 kPa and sliding speeds around 12 cm/s. Using a microtribometer a series of experiments was run on commercially available contact lenses made from Etafilcon-A. These tests were run using 10–50 mN of normal load at speeds from 63 to 6280 μm/s using a 1-mm radius ...
A. C. Rennie +2 more
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Shell model calculations of translational and rotational frictional coefficients
Journal of Polymer Science Part C: Polymer Symposia, 1968AbstractPrevious work has shown that it is possible to calculate the translational and rotational frictional coefficients of complex structures by modeling them by a surface shell of spherical elements. The basic equations of this shell model method and its application to spheres, prolate ellipsoids of revolution, proteins, and viruses, are reviewed ...
Victor A. Bloomfield, Don P. Filson
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