Formulae for the efficiency factor of moving friction pairs construction equipment are investigated in terms their mutual adaptation (conformism) during and wear. As a basis, average coefficients sliding dimensions reference line curves, half-sums products worn surfaces microrelief mating parts taken. Coefficients lines were determined from partial values microwear micromaterial normalized syst...

The purpose of this paper is to evaluate the possibility of using the diffusion equation for raindrop erosion modelling. We wanted in particular to know if such a model could provide accurate interpolations of microrelief between two known dates. In a theoretical section, we show that the assumption that soil particles follow parabolic trajectories when splashed by raindrop impacts leads to a d...

The analytical dependences for determining the overlap area of V-shaped grooves partially regular microrelief shifted by an angular pitch 0.5° are established. formed on end surface rotary body vibration. In addition, intersection between groove elements can be different types. relationship geometric parameters and their location is determined. influence geometrical established depending locati...

We develop a method for calculating the eikonal function (or phase function) of light field, ensuring formation prescribed irradiance distribution in geometrical optics approximation. In proposed method, problem being solved is formulated semi-discrete form as maximization concave function. For finding solution to latter problem, gradient used, with analytical expressions obtained gradient. Usi...