Showing 1 - 10 of 59
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
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
Persistent link: https://www.econbiz.de/10009280813
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
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
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
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
In this work, a combination of numerical methods applied to thermohydrodynamic lubrication problems with cavitation is …
Persistent link: https://www.econbiz.de/10010870011
Bacteria have developed sophisticated modes of cooperative behavior to cope with unfavorable environmental conditions. Here we report the effect of antibiotic stress on the colonial development of Paenibacillus dendritiformis and P. vortex. We focus on the effect of co-trimoxazole on the...
Persistent link: https://www.econbiz.de/10010872813
This paper presents the experimental results carried out to evaluate wear prevention characteristics of a palm oil …-based TMP (trimethylolpropane) ester using a four-ball machine for different regime of lubrication. The TMP ester is produced … lubrications. Under these test conditions, the wear and friction characteristics of different TMP samples are measured and compared …
Persistent link: https://www.econbiz.de/10011054036