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Frictional stick-slip dynamics in a nonsinusoidal Remoissenet-Peyrard potential

Kenmoé, G. Djuidjé; Kofané, T. C. - In: The European Physical Journal B - Condensed Matter and … 55 (2007) 4, pp. 347-354

Frictional stick-slip dynamics is studied theoretically and numerically in a model of one oscillator interacting with a nonsinosoidal subtracted potential. We focus our attention on a class of parameterised one-site Remoisenet-Peyrard potential U<Subscript>RP</Subscript>(X,r), whose shape can be varied as a function...</subscript>

Persistent link: https://www.econbiz.de/10009280260

Generalization of a nonlinear friction relation for a dimer sliding on a periodic substrate

Tiwari, M.; Gonçalves, S.; Kenkre, V. M. - In: The European Physical Journal B - Condensed Matter and … 62 (2008) 4, pp. 459-464

An atomic cluster moving along a solid surface can undergo dissipation of its translational energy through a direct mode, involving the coupling of the center-of-mass motion to thermal excitations of the substrate, and an indirect mode, due to damping of the internal motion of the cluster, to...

Persistent link: https://www.econbiz.de/10009280439

Nonlinear spring model for frictional stick-slip motion

Kenmoé, G. Djuidjé; Jiotsa, A. Kenfack; Kofané, T. C. - In: The European Physical Journal B - Condensed Matter and … 70 (2009) 3, pp. 353-361

Persistent link: https://www.econbiz.de/10009280813

Front roughening in three-dimensional imbibition

Dubé, M.; Daneault, C.; Vuorinen, V.; Alava, M.; Rost, M. - In: The European Physical Journal B - Condensed Matter and … 56 (2007) 1, pp. 15-26

We investigate the structure and dynamics of the interface between two immiscible liquids in a three-dimensional disordered porous medium. We apply a phase-field model that includes explicitly disorder and discuss both spontaneous and forced imbibition. The structure of the interface is...

Persistent link: https://www.econbiz.de/10009281100

IMPROVING THE SURFACE PROPERTIES OF INCONEL 718 BY APPLYING A CO2 LASER HEAT TREATMENT TO A HIGH-VELOCITY OXY-FUEL COATING OF WC-CrCo POWDER

CHO, T. Y.; YOON, J. H.; JOO, Y. K.; ZHANG, S. H.; CHO, … - In: Surface Review and Letters (SRL) 17 (2010) 02, pp. 207-213

the highest surface hardness was determined with the Taguchi program. The friction and wear behaviors of the coating, an … electrolytic hard chrome (EHC)-plated coating and IN718, were comparatively investigated via a reciprocating sliding wear test at ….02 at 450°C; the coating had the lowest FC among the three samples. At both temperatures, the coating wear depth (WD) was …

Persistent link: https://www.econbiz.de/10008799817

Size dependence of effective mass in granular columns

Liu, Jia; Shi, Qingfan; Liang, Xuanwen; Yang, Lei; Sun, Gang - In: Physica A: Statistical Mechanics and its Applications 388 (2009) 4, pp. 379-384

An experimental setup is developed to measure accurately and reproducibly the effective mass as well as its fluctuations at the bottom of the granular columns. It is found that the saturated mass Ms obeys a third power function of the diameter of the silos. The data obtained are in agreement...

Persistent link: https://www.econbiz.de/10010589300

Dynamics of a viscous ball rolling down on a rigid staircase

Yan, Hua; Shi, Qingfan; Huang, Decai; Sun, Gang - In: Physica A: Statistical Mechanics and its Applications 374 (2007) 2, pp. 524-532

We theoretically investigate the motion of a ball rolling down on a periodical staircase. Our research is restricted in the case of completely inelastic collision when the ball falls down on the surface of the stairs. The ball is accelerated when it rolls cross the edge of the stair, while it is...

Persistent link: https://www.econbiz.de/10010589468

RAMAN, DIELECTRIC AND OPTICAL INVESTIGATIONS OF DLC THIN FILMS

MALEKFAR, RASOUL; MOTAHARI, HAMID; ROHOLLAHNEJAD, JALAL; … - In: Surface Review and Letters (SRL) 16 (2009) 05, pp. 731-736

Diamond-like carbon, DLC, thin films which is an amorphous hydrogenated form of carbon, a-C:H, has been synthesized by CVD method. SEM imaging, back-scattering Raman spectroscopy and reflected FT-IR spectroscopy have been used for characterization of the synthesized thin films. Kramers–Kronig...

Persistent link: https://www.econbiz.de/10008474845

EFFECT OF METAL ION ETCHING ON THE TRIBOLOGICAL, MECHANICAL AND MICROSTRUCTURAL PROPERTIES OF TiN-COATED D2 TOOL STEEL USING CAE PVD TECHNIQUE

ALI, MUBARAK; HAMZAH, ESAH BINTI; TOFF, MOHD RADZI HJ. MOHD - In: Surface Review and Letters (SRL) 13 (2006) 04, pp. 413-421

in order to improve the micro-Vickers hardness, coefficient of friction and surface roughness of TiN coating deposited on … showed the maximum hardness, i.e., about five times higher than uncoated one and 1.24 times to the coating deposited at zero … ion etching. After friction test, the wear track was observed by using field emission scanning electron microscope. The …

Persistent link: https://www.econbiz.de/10004977513

THE EFFECT OF NITROGEN GAS FLOW RATE ON THE PROPERTIES OF TiN-COATED HIGH-SPEED STEEL (HSS) USING CATHODIC ARC EVAPORATION PHYSICAL VAPOR DEPOSITION (PVD) TECHNIQUE

MUBARAK, ALI; HAMZAH, ESAH BINTI; TOFF, MOHD RADZI HJ. MOHD - In: Surface Review and Letters (SRL) 12 (2005) 04, pp. 631-643

Cathodic arc evaporation (CAE) is a widely-used technique for generating highly ionized plasma from which hard and wear … deposited coating, adhesion between the coating and substrate, coating composition, coating crystallography, hardness and …-ray diffraction (XRD) with glazing incidence angle (GIA) technique, scratch tester, hardness testing machine, surface roughness tester …

Persistent link: https://www.econbiz.de/10004977522