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EN
This article attempts to solve the problem of load compensation in mesh planetary gearing, with the innovative design idea, resulting from the increased plasticity of the planet wheels (satellite). The cognitive main objective of the experimental work was carried out to identify the comparative effect of the split narrow planet gears, on the load distribution on the length of the teeth of the planet gears of the central wheel of the planetary gear. Achieving this aim, in addition to in-depth analysis, requires experimental research on a specially-built test stand and simulation tests on a solid model of the transmission using the finite element method (FEA). This article presents the concept of a novel test stand, design methodology and research on the influence of the sectional satellite wheels on the load mesh of planetary gears in mining machines.
EN
The action of high-rise building state under the horizontal seismic loads is considered. The action of elastic features of the high-rise buildings supporting structures on their stressed state change with the horizontal seismic loads is defined and the appropriate correction factor is presented.
PL
W artykule opisano zachowanie wysokościowca pod wpływem poziomych obciążeń sejsmicznych. Opisano stan odkształceń sprężystych struktur nośnych w wysokich budynkach pod wpływem drgań sejsmicznych, oraz przedstawiono odpowiedni współczynnik korekcyjny.
PL
W artykule podjęto próbę rozwiązania problemu wyrównywania obciążeń w zazębieniach przekładni planetarnych, przez zastosowanie innowacyjnego pomysłu konstrukcyjnego, polegającego na zwiększeniu podatności kół obiegowych (satelitarnych). Przedstawiono również koncepcję nowatorskiego stanowiska badawczego oraz metodykę badań wpływu dzielonych kół satelitarnych na przebieg obciążenia w zazębieniach przekładni planetarnych maszyn roboczych.
EN
This article attempts to solve the problem of load compensation in meshing teeth of planetary gears, with the innovative idea of design, resulting from the increased susceptibility of planet wheels (satellite). It also presents a novel concept of test stand and design methodology on the influence of sectional satellite wheels to course load in meshing teeth of planetary gears in working machines.
EN
The article presents the experimental and theoretical research of reinforced concrete beams deformations, damaged in the conditions of simultaneous influence of aggressive environment and loading with their further renewal. The peculiarity of this research is that during influence of aggressive environment reinforced-concrete beams were tested both under the action of loading and without it. The influence of aggressive environment and renewal took place in the conditions of the operating loading on the reinforced-concrete beams. Such a combination of influences allows to define the optimal method of research of the renewal process in reinforced-concrete structures and the influence of loading, at which the strengthening takes place on the efficiency of renewal and deformations of experimental samples. The experimental and theoretical values of deformations of reinforced-concrete beams which were renewed without loading and under the operating loading are obtained. Their comparison is carried out with the purpose of determining the optimal method of research of such structures.
EN
The paper presents the results of computations and measurements of the waveforms of currents and voltages of the claw pole alternator at the constant speed in the steady state. The computations and measurement were made for the alternator resistance load. The calculations were carried out with use of the finite element method in the transient module of program Maxwell 3D. The computation results of the waveforms were compared with the measurement results of the claw pole alternator.
PL
W artykule przedstawiono model obliczeniowy alternatora kłowego w stanie zwarcia i obciążenia. Przebiegi w stanie ustalonym alternatora oraz charakterystyki w stanie zwarcia i w stanie obciążenia wyznaczono na podstawie wyników obliczeń polowo-obwodowych w których uwzględniono ruch wirnika i układ połączeń uzwojeń stojana w trójkąt. Przykładowe wyniki obliczeń podano dla alternatora 14V, 140A.
EN
The paper presents a computational model of the claw pole alternator under short circuit and load conditions The short circuit and load steady state waveforms and characteristics were determined basing on the results of field circuit computations taking into account motion of a rotor and delta configuration of stator windings. The exemplary computation results for an alternator 14V, 140A are given in the paper.
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