simulation

Structural and kinematic analysis of pantograph-type manipulator with three degrees of freedom

Problem statement. The processes of development and improvement of autonomous mobile robots are significantly constrained because of the lack of an open-access comprehensive scientific and theoretical framework for calculating and designing of autonomous mobile robotic systems Purpose. The main objective of the paper consists in carrying out kinematic analysis and motion simulation of pantograph-type manipulator with three degrees of freedom. Methodology.

Simulation of micro-cutting in the process of finishing anti-friction non-abrasive treatment

The influence of the shapes and sizes of microroughnesses on the creation of favorable conditions for micro-cutting of antifriction material by modeling the contact interaction of microroughnesses with the treated surface during the finishing antifriction non-abrasive treatment (FANT) is studied in the work. It is shown that the formation of the anti-friction coating FANT depends on the conditions of contact interaction of the tool with the treated surface, and the shape and size of the microroughness determine the quality of the resulting coating.

Simulation of globoid worm gear cutting by continuous forming method with disk milling cutters

Aim. The simulation of forming process for tooth flanks of worm gears for globoid worm gears by continuous forming method using disk milling cutters for development scientific well-founded recommendations about technological ensuring for manufacture of globoid worm-wheels. Method. The researches are based on kinematic analysis methods of classical mechanics, differential and analytic geometry, theory of gear wheels, theory of forming surfaces of parts by cutting.

Substantiation of structure and parameters of pneumatic system of mobile robot with orthogonal walking drive

Problem statement. Mobile robots have awoken a large interest between scientists and designers in the last few years. One of the prospective drives of such robots is based on pneumatically operated system with no use of electric, heat, magnetic or other types of energy. Purpose. The main purpose of this research consists in substantiation of structure and parameters of pneumatic system of mobile robot with orthogonal walking drive.

Mathematical Modeling and Simulation of Direct Reduction of Iron Ore in a Moving Bed Reactor by the Single Particle Model

In this work, a mathematical model is developed for simulating the behavior of a counter-current moving bed reactor, in which the reduction of porous iron ore pellets to sponge iron is simulated. Simultaneous mass and energy balances within both the solid particles and the reactor, will lead to a set of coupled ordinary differential equations. The iron ore reduction kinetics was modeled with a single particle model. The model was able to satisfactorily reproduce the data of Gilmore Steel Corporation (USA).

On the Approaches to Cyber-physical Systems Simulation

A comparative analysis of existing approaches to Cyber-Physical Systems simulation has been conducted. The intrinsic peculiarities of Cyber-Physical Systems have been reasoned and generalized. Thelimitations of available simulation tools have been pointed out. The approach to Cyber-Physical Systems design solutions checking on the basis of timed automata, UPPAAL integrated tool environment and Temporal Logic of Actions usage has been proposed.

The influence of the vehicle’s suspension malfunction on its operational efficiency

The main malfunctions that arise when operating a vehicle in Ukraine are the failure of the suspension elements and vehicle tires due to the poor condition of the most roads [11]. The car suspension elements soften the dynamic loads and smooth out the oscillations from the unevenness on the road while riding and provide a good stability and smoothness of the car ride.

SIMULATION OF THE CAVITATION PROCESS IN THE LIQUID MEDIUMS

The article is devoted to computer modeling of the process of cavitation in liquid
mediums. The experimental researches of the regularities of the cavitation process was
conducted, dependences of changes in the parameters of the process efficiency on the
concentration of the solution and the frequency of vibration are shown. A solid– state model of
a laboratory vibration resonance electromagnetic cavitator in SolidWorks 2016 Educational
Edition software system was created. Based on the modeling of the cavitation process, the main

Determination of Hydro-Erosion Wear Coefficient for Sealing Elements of Pipeline Fittings

A model of hydro-erosion wear of sealing elements was constructed taking into account a set of parameters that reflect the physical properties of the fluid and the material of the sealing elements, as well as the design parameters of the valves. To determine the dependence of the rate of erosion wear on a complex of parameters, we use the π-theorem of similarity and the method of dimension analysis. An expression is given that determines the change in the thickness of the erosive fracture of the sealing surfaces in time.

Simulation of transients for designing multiple power filter circuits

The practice of operating multiple single-tuned filters in industrial power supply systems has shown that technological transformer capacitors in switching filters within the systems can cause the damage of filters. The most disturbing loads on the power supply systems are powerful AC arc furnaces. Static Var compensators used in the power supply systems contain multiple harmonic filters for harmonic mitigation and reactive power compensation.