Перегляд за Автор "Sydorenko, I. I."
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Документ The effect of elastic recoil of closed-type lifting ropes after their manufacture and drawing(Національний технічний університет "Харківський політехнічний інститут", 2022) Kurgan, V. O.; Sydorenko, I. I.; Vaysman, V. O.; Pavlyshko, A.; Litvinov, V. F.; Vovk, V.A study was made of stresses and factors of internal forces in the elements of ropes of a closed structure during their manufacture. It is established that when twisting a rope of closed construction, its shaped wires suffer from bending deformation, twisting and stretching. In this case, the shaped wires are subjected to a complex load with the concomitant rotation of the axes of the stress tensor. The stresses in the elastic cross-sectional area of the rope wire are considered and its limit is determined for shaped cross-sections and for asymmetric shaped cross-sections. Formulas for approximate determination of tangential and normal stresses in the elements of a closed rope of noncircular profile are obtained: (wedge-shaped, zeta-shaped and x-shaped).Документ Mathematical modeling of transmission start with an asynchronous electric motor(Національний технічний університет "Харківський політехнічний інститут", 2020) Kurgan, V. O.; Sydorenko, I. I.; Litvinov, V. F.; Vaysman, V. O.; Kirkopulo, K. G.; Kulik, V. P.The most difficult moment in the work with an asynchronous motor is the launch. And the more powerful drive is the more difficult launch. This is due to certain features of the asynchronous motors: a limited starting torque and starting throws of the current of the stator motor chain. The mathematical modeling of oscillating process of actuation of the actuator with an asynchronous motor, which includes an elastic coupling with nonlinear mechanical feedback, is carried out. The influence of the type of elastic characteristics of the coupling on the magnitude of the amplitude and frequency of the oscillation process and its time was studied. A single-mass rotational system model was used for the studies. According to the Runge-Kutta method, the oscillation processes of starting the transmission of a machine unit with an induction motor were investigated. To determine the coefficient of vibration isolation, a system with an elastic coupling having a linear elastic characteristic was calculated. A study was also conducted in the case where the coupling determines the elastic characteristics of the Duffing type "soft" and "hard" type.