simulation

This study presents the development and dynamic analysis of a mechanical model representing a multi-component vibratory system consisting of a feeder, a vibratory transporter, and a conveyor-separator. The main goal is to simulate the oscillatory response of a three-mass separator excited by a crank-slider mechanism and analyse its efficiency, focusing on the working body responsible for material separation. The vibratory system is modeled using a set of second-order linear differential equations derived via Lagrange’s second kind formulation.

The purpose of this article was to formulate recommendations for developing strategies for multi-tool cutting of gear wheels that ensure a productive and reliable process for ensuring the accuracy and quality of machined surfaces.  The determination of the effective axial feed rate to achieve maximum productivity has not yet been fully explored. The objective of this article is to ascertain and examine the impact of axial feed on the chip formation process during the cutting of the gear rim.

The article presents the results of modeling and studying the processes of cutting internal gears by the power skiving method based on the previously developed graph-analytical model of cut layers. The results of the calculations of the geometrical parameters of undeformed chips can be used to calculate the forces that occur in the process of four-pass gear cutting and influence the parameters of this process.

The possibility of increasing productivity by increasing the cutting parameters of difficult-to-machine materials, using expensive tool materials, etc. is an extensive trend of innovative improvement and is accompanied by high costs of operations and the need to provide expensive equipment. The article argues that a more effective method of improving machining operations is the use of the workpiece Turning with Preventive Heating (TPH) method.

This article explores the formation of non-deformed chips during the cut-in of an internal toothed ring using the Power Skiving method. This pivotal stage of the cutting process poses significant hazards not only in gear cutting but also in any cutting operation. The study involved modeling the process at the initial stage for various technological parameters, including cut-in depth and number of working passes. To achieve non-deformed chips, a methodology developed for worm milling was applied.

Simulation of the dose rate of building materials γ-radiation in the premises of different designs has revealed the minimal levels of human exposure. It was determined that the exposure dose rate at the given points of a single room depends on the content of natural radionuclides in construction materials and the changing geometry of a person's exposure in the premises. When the exposure dose rate of γ-radiation above an individual plate is determined, it is conventionally divided into the discrete sources, the dose rate from several plates is summed up.