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Dynamic analysis of three-mass vibratory system with twin crank-slider excitation mechanism

100%

Korendiy V. , Gursky V. , Krot P. , Kachur O.

Vibrations in Physical Systems

2023

tom Vol. 34, nr 2

art. no. 2023226

The paper studies the dynamic behavior of the vibratory sieving conveyor equipped with the twin crank-slider excitation mechanism. The main purpose of this research consists in substantiating the possibilities of implementing the improved drive for providing the controllable vibration parameters of the working member (conveying tray, sieve, etc.) in accordance with the specific technological requirements set for different materials to be sieved and conveyed. In order to reach the goal set above, the following objectives are established: analyzing the design peculiarities of the vibratory sieving conveyor; deriving the mathematical model describing the conveyor’s oscillatory system dynamic behavior; studying the system kinematic, dynamic, and power characteristics. The system motion is described using the Lagrange-d’Alembert principle, and the numerical modeling is carried out in the Mathematica software with the help of the Runge-Kutta methods. The influence of the vibratory system's geometrical parameters on the motion conditions of the conveyor’s working member (conveying tray and sieve) is analyzed.

The experimental study of compaction parameters and elastic after-effect of fine fraction raw materials

88%

Baiul K. , Khudyakov A. , Vashchenko S. , Krot P. , Solodka N.

Mining Science

2020

tom Vol. 27

7--18

Mining and metallurgical enterprises generate a significant amount of secondary raw material resources having small-fractions (below 3 mm). A significant volume of these materials can be returned into the production process by the use of the briquetting method. The quality of briquettes, in particular, their strength, is significantly affected by a phenomenon called elastic after-effect. For a theoretical study of the elastic after-effect influence on the quality of the briquettes, taking into account the pressing tool configuration, experimental data are obtained for three materials (peat, kaolin and manganese concentrate). Results are in creating the analytical relations (regression models) having enough high accuracy to describe the dependence of compaction coefficient, elastic after-effect, density and elastic heave (decompaction) on an external pressure in the compaction machine.