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Conveyors are one of the important components of transport systems and are used in almost all branches of mechanical engineering. This paper investigates the dynamics of the intermittent motion conveyor mechanical system. The mechanical transmission is a planetary mechanism with elliptical gears, in which the intermittent motion of the output shaft is provided by a variable gear ratio of non-circular gears. A single-mass dynamic model is built by reducing the masses, forces and moments to the initial link, which is the input shaft of the mechanism. The solutions of the equations of initial link motion were obtained using two methods, the energy-mass method and the third-order Hermite method. Dynamic studies by the energy-mass method made it possible to determine flywheel moment of inertia to reduce the coefficient of initial link rotation irregularity. The convergence of the functions of the initial link angular velocity obtained by both methods was confirmed. The results can be used for further force analysis, strength calculations, design and manufacture of the conveyor.
Alexander Prikhodko. Dynamic Analysis of Intermittent-Motion Conveyor Actuator. Actuators 2021, 10, 174 .
AMA StyleAlexander Prikhodko. Dynamic Analysis of Intermittent-Motion Conveyor Actuator. Actuators. 2021; 10 (8):174.
Chicago/Turabian StyleAlexander Prikhodko. 2021. "Dynamic Analysis of Intermittent-Motion Conveyor Actuator." Actuators 10, no. 8: 174.
Reciprocating rotary motion of the impeller in a mixer is produced by a planetary mechanism with elliptical gears. The forces in the planetary mechanism are analyzed. Equations of kinetostatic equilibrium are derived and solved for each component of the mechanism. The angular position of the mechanism’s input shaft affects the reaction in the kinematic pairs and the balancing torque. This influence is described by mathematical formulas. The results obtained here may be used in the synthesis and analysis of machines with a planetary mechanism of the type considered.
A. A. Prikhod’Ko. Force Analysis of Reciprocating Rotary Planetary Mechanism with Elliptical Gears. Russian Engineering Research 2021, 41, 387 -391.
AMA StyleA. A. Prikhod’Ko. Force Analysis of Reciprocating Rotary Planetary Mechanism with Elliptical Gears. Russian Engineering Research. 2021; 41 (5):387-391.
Chicago/Turabian StyleA. A. Prikhod’Ko. 2021. "Force Analysis of Reciprocating Rotary Planetary Mechanism with Elliptical Gears." Russian Engineering Research 41, no. 5: 387-391.
Stirred tanks are one of the most popular types of equipment in chemical, food and oil refining industries. Currently, various authors have proved that a constant speed of the impeller leads to the low efficiency of the mixing process, the formation of stagnant zones and a decrease in the quality of the product. The author proposes using a transmission with elliptical gears as the actuator of the stirred tank. A kinematic analysis of the proposed transmission is carried out, as a result of which the analogues of the angular velocity and angular acceleration of the output link are found. A single-mass dynamic model of the mechanism is constructed by reduction of the forces, masses and moments to a primary link (an actuator input shaft). The law of motion of the reduction link of the mechanism is found and the moment of inertia of the flywheel is calculated. The obtained results of dynamic analysis allow designing an experimental setup and conduct studies of the mixing efficiency.
A. A. Prikhodko. Dynamic Analysis of Irregular Motion Stirrer with Elliptical Gear. Recent Advances in Computational Mechanics and Simulations 2021, 928 -935.
AMA StyleA. A. Prikhodko. Dynamic Analysis of Irregular Motion Stirrer with Elliptical Gear. Recent Advances in Computational Mechanics and Simulations. 2021; ():928-935.
Chicago/Turabian StyleA. A. Prikhodko. 2021. "Dynamic Analysis of Irregular Motion Stirrer with Elliptical Gear." Recent Advances in Computational Mechanics and Simulations , no. : 928-935.
Mechanical stirrers are widely used in chemical, petrochemical, food, construction and many other industries. Currently, a large number of stirred tank actuators with various types of the impeller motion have been developed, and at the moment the most promising constructions are rotationally reciprocating stirred tanks, since they make it possible to ensure high intensity of heat and mass transfer processes in the reactor, to eliminate stagnant zones and to increase the velocity gradient of the stirred liquid. As an actuator, the author proposes to use a planetary gear with elliptical gearwheels, which allows to convert the rotational motion of the motor shaft into a rotationally reciprocating motion of the impeller. For the design and manufacture of stirred tank, it is necessary to investigate its kinetostatics. In the article, the force analysis of the planetary actuator of the mixing device was carried out, as a result of which the design schemes were obtained and expressions were found for determining reactions in kinematic pairs. This will allow further calculations of the elements of kinematic pairs and links for strength, as well as determining the efficiency of the actuator.
A. A. Prikhodko. Kinetostatics of Rotationally Reciprocating Stirred Tank Planetary Actuator. Proceedings of the 2nd Annual International Conference on Material, Machines and Methods for Sustainable Development (MMMS2020) 2019, 359 -366.
AMA StyleA. A. Prikhodko. Kinetostatics of Rotationally Reciprocating Stirred Tank Planetary Actuator. Proceedings of the 2nd Annual International Conference on Material, Machines and Methods for Sustainable Development (MMMS2020). 2019; ():359-366.
Chicago/Turabian StyleA. A. Prikhodko. 2019. "Kinetostatics of Rotationally Reciprocating Stirred Tank Planetary Actuator." Proceedings of the 2nd Annual International Conference on Material, Machines and Methods for Sustainable Development (MMMS2020) , no. : 359-366.
The paper presents the results of a homogeneous Mathieu equation studies. Mathieu equation solutions are oscillations, modulated in amplitude and frequency. In the computational experiments we found dependences of the given oscillations on the ratio of the coefficients. These dependences are shown in graphs that can be used for an approximate estimation of the Mathieu equation solutions without integration.
A.A. Prikhodko; A.V. Nesterov. Analysis of Mathieu Equation Stable Solutions in the First Zone of Stability. Procedia Engineering 2016, 150, 341 -346.
AMA StyleA.A. Prikhodko, A.V. Nesterov. Analysis of Mathieu Equation Stable Solutions in the First Zone of Stability. Procedia Engineering. 2016; 150 ():341-346.
Chicago/Turabian StyleA.A. Prikhodko; A.V. Nesterov. 2016. "Analysis of Mathieu Equation Stable Solutions in the First Zone of Stability." Procedia Engineering 150, no. : 341-346.
The study is devoted to dynamics of the rotationally reciprocating stirred tank with four-bar linkage actuator. The dynamic model is constructed by reduction of link masses and moments of inertia, as well as moments of driving forces and resistance forces to the reduction link, which is a crank. It is shown that the angular velocity of the crank is not constant, so a flywheel is installed to provide the required rotation regularity. The resulting mathematical model can be used in construction and design of the stirred tanks.
A.A. Prikhodko; A. I. Smelyagin. Dynamic analysis of rotationally reciprocating stirred tank with multiple impellers. 2015 International Conference on Mechanical Engineering, Automation and Control Systems (MEACS) 2015, 1 -5.
AMA StyleA.A. Prikhodko, A. I. Smelyagin. Dynamic analysis of rotationally reciprocating stirred tank with multiple impellers. 2015 International Conference on Mechanical Engineering, Automation and Control Systems (MEACS). 2015; ():1-5.
Chicago/Turabian StyleA.A. Prikhodko; A. I. Smelyagin. 2015. "Dynamic analysis of rotationally reciprocating stirred tank with multiple impellers." 2015 International Conference on Mechanical Engineering, Automation and Control Systems (MEACS) , no. : 1-5.
The authors propose a distinctive construction of the planetary mechanism with elliptical gears designed to convert rotational motion into reciprocating rotational (oscillating) one. We conducted a kinematic analysis of the mechanism, found the variation of the rotation angle, the angular velocity analogue and angular acceleration analogue of the mechanism output shaft. The developed mechanism is a classic planetary mechanism and is more reliable and compact in comparison with the lever and electromagnetic inverters.
A.A. Prikhodko; A.I. Smelyagin. Kinematic Analysis of Mechanism for Converting Rotational Motion into Reciprocating Rotational Motion. Procedia Engineering 2015, 129, 87 -92.
AMA StyleA.A. Prikhodko, A.I. Smelyagin. Kinematic Analysis of Mechanism for Converting Rotational Motion into Reciprocating Rotational Motion. Procedia Engineering. 2015; 129 ():87-92.
Chicago/Turabian StyleA.A. Prikhodko; A.I. Smelyagin. 2015. "Kinematic Analysis of Mechanism for Converting Rotational Motion into Reciprocating Rotational Motion." Procedia Engineering 129, no. : 87-92.