Wyniki wyszukiwania - BazTech

1

Lubrication impact on the value of friction coefficient of coffee beans sliding ever the steel surfaces of various roughness

Kuzminskyi R., Sokolovskyi O., Lozovyi R., Sheremeta R., Zholobko V.

ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes

|

2014

|

Vol. 3, No 4

91--95

EN

The article analyzes the influence of steel surfaces processing quality on the value of sliding friction coefficient of Robusta and Arabica coffee beans at dry and lubricated fricbica. The research obtained coffee dry and lubrication functions and parameters of sliding friction coefficients distributions and mathematical models for determining the index which depends on the roughness of steel surfaces.

2

Improvement of Automated Calculation of Process Bailing of Vacuum Systems

Sheremeta R., Sheremeta B.

Machine Dynamics Research

|

2011

|

Vol. 35, No. 3

67-73

EN

Evacuating installations of manufacturing equipment used in industry should not only be technically perfect, but also economically beneficial. To ensure such requirements are ecessary to carry out mathematical modeling of the process pumping. This allows you to make optimal cyclogram of individual elements of the physical vacuum system installation. To facilitate the planning of vacuum systems should automatize the calculations of parameters of the gas environment at typical pumping modes of physical facilities.

3

Optimal Design of Pneumatic Hydro Machines with Metal-Polymer Sealed Connections

Sheremeta R., Ogar P.

Machine Dynamics Problems

|

2007

|

Vol. 31, No. 3

69-74

EN

In many industries tasks of quality improvement of modern machines is related to the existent tendency of increasing of working pressure of pneumatic hydro machines, expansion of temperatures range, decline of material- and power-intensive level of constructions, which to a great extent is limited by reliability of pneumatic hydro machines (PHM). Problem statement of optimization of metal-polymer sealed connections with an electromagnetic valve gear is conducted in the paper. Space of parameters is defined and parametrical, functional and criterion limitations are assigned. Optimization of construction is conducted in accordance with (Sobol, Statnikov 1986; Frolov, 1984). The choice of optimal parameters is carried out after one deciding criterion or after a few criteria simultaneously. Offered approach allows for the first time on the stage of design to take into account scientifically based requirements after impermeability and longevity that considerably increase reliability of construction. Increase of number of initial parameters that affect quality of construction, gives maximal possibility to decrease its mass. For example, increase of number of initial parameters at constructing electromagnetic pressurizing devices from three (after a method proposed by Karmugin et al., 1980) to eleven (after the offered method) allow to lower mass by 30...50%, that is especially important for the pressurizing devices of pneumatic hydro machines in aerospace aircrafts.