stiffness parameters

This article presents an analytical and engineering justification for the use of flat elastic elements in eccentric-pendulum-type resonant vibration tables. The study addresses the design, calculation, and structural optimization of resonant elastic nodes, which ensure directional oscillations, define dynamic performance, and determine the durability and reliability of the machine.

The article addresses excessive energy consumption in resonance vibration machines with inertial drives, widely used in mechanical engineering, construction, chemical, metallurgical, and mining industries. Conventional design approaches limit energy efficiency, motivating the modernization of one- and two-mass resonance systems into three-mass inter-resonance configurations. Using a method for determining inertia–stiffness parameters, the study ensures synchronous inter-resonance oscillatory modes, enhancing dynamic amplification and reducing drive power.

The widespread use of vibrating tables in industry motivates researchers to develop new, efficient designs that can increase production profitability. For this purpose, the authors present a new schematic design of a vibrating table with an inertial drive, proposed to be powered by a hydraulic coupling. The principle of operation is as follows: the driving shaft of the hydraulic coupling is rotated by an electric motor, while its driven shaft is connected to an unbalanced mass.

The purpose of research. The main goal of the presented research consists in substantiation of inertial, stiffness and force (excitation) parameters of mechanical oscillatory system of three-mass vibratory conveyer with directed oscillations of the working element in order to provide the highly efficient (high-performance) resonant operation mode. Methodology. The technique of the research is based on fundamental concepts of engineering mechanics and theory of mechanical vibrations.

The purpose of the paper. Substantiation of structure (design), parameters and operation modes of the improved vibratory finishing machine. Analysis of dynamical processes which occur during “lap over lap” dressing. Investigation methodology. Mathematical model of motion of the mechanical system of vibratory finishing machine was developed on the basis of Lagrange differential equations of the second order. For the purpose of describing friction between the working surfaces of the laps, the Coulomb friction model was used.

The purpose of research. Analysis of influence of stiffness parameters of mobile vibratory device with two unbalanced vibration exciters on eigenfrequencies of its mechanical system and substantiation of stiffness parameters in order to ensure its energy-efficient resonance operation mode. Methodology. The technique of the research is based on fundamental concepts of engineering mechanics and theory of mechanical vibrations.