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Optimal tuning of mechanical systems by application of a pneumatic tuner of torsional oscillation

Homišin J.

Zeszyty Naukowe. Transport / Politechnika Śląska

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2017

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z. 97

47--55

EN

Reducing the dynamic load of any mechanical system can be achieved when the torsional vibration magnitude is optimized by applying a pneumatic tuner of torsional oscillation. Changing the torsional stiffness of a pneumatic tuner can be accomplished by changing the pressure of the gaseous medium, out of operation or during the operation of a mechanical system. This results in two suggested methods of tuning: (i) tuning of torsional oscillating mechanical systems that are out of operation, which fulfils the conditions for mechanical system tuning; (2) tuning mechanical systems during an operation in a steady state, thus ensuring the conditions of so-called continuous tuning of the given systems. The aim of this paper is to present the possibility of controlling torsional oscillation of a mechanical system that is out of operation by applying a tangential pneumatic tuner of torsional oscillation.

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Characteristics of pneumatic tuners of torsional oscillation as a result of patent activity

Homišin J.

Acta Mechanica et Automatica

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2016

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Vol. 10, no. 4

316--323

EN

Mechanical systems with combustion engines, compressors, pumps and fans, can be characterized as torsional oscillating mechanical systems (TOMS). It is therefore necessary to control their dangerous torsional vibrations. It was confirmed that dangerous torsional vibration can be reduced to acceptable level by an appropriate adjustment, respectively by tuning the TOMS. According to several authors, the most appropriate way of system tuning is application of suitable flexible element, which is flexible shaft coupling. It turned out that one of the types of shaft couplings, which are particularly suited to meeting this objective are pneumatic flexible shaft couplings, to act as so-called pneumatic tuners of torsional oscillations. The issue of research and development of pneumatic tuners of torsional oscillations, among other things is, long-term in the focus of the author. The existence of tuners creates the opportunity to develop new ways of tuning torsional oscillating mechanical systems. The author of the scientific article will focus on the characteristics of developed pneumatic tuners of torsional oscillation in terms of their design, construction, function, significance advantages and conditions imposed on pneumatic tuners based on the results of his patent activity. Simultaneously provides information about the characteristic properties of pneumatic tuners of torsional oscillations in the general design.

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Patent activity in the area of pneumatic couplings development and their application in mechanical systems

Homisin J.

Zeszyty Naukowe. Transport / Politechnika Śląska

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2014

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z. 84

13--19

EN

Mechanical systems with combustion engines, compressors, pumps and fans, can be characterized as torsionally oscillating mechanical system (TOMS). It is therefore necessary to control their dangerous torsional vibrations. It was confirmed that dangerous torsional vibration can be reduced to acceptable level by an appropriate adjustment, respectively by tuning the TOMS. According to several authors, the most appropriate way of system tuning is application of suitable flexible element, which is flexible shaft coupling. It turned out that one of the types of shaft couplings, which are particularly suited to meeting this objective are pneumatic flexible shaft couplings, to act as so-called pneumatic tuners of torsional oscillations. The issue of research and development of pneumatic tuners of torsional oscillations, among other things is, long-term in the focus of the author. The existence of tuners creates the opportunity to develop new ways of tuning torsionally oscillating mechanical systems. The aim of article will highlight the author's patent activity in the development of pneumatic tuners of torsional oscillations and their applications in torsionally oscillating mechanical systems.

PL

Układy mechaniczne z silnikami spalinowymi, sprężarkami, pompami i wentylatorami można określić jako układy mechaniczne drgające skrętnie (UMDS). Z tego powodu konieczne jest opanowanie ich niebezpiecznego drgania skrętnego. Zostało potwierdzone, że niebezpieczne drganie skrętne można zmniejszyć do dopuszczalnego stopnia przez odpowiednią zmianę, czyli dostrojenie UMDS. Według wielu autorów najlepszym sposobem dostrojenia układu jest zastosowanie odpowiedniego elementu elastycznego, za który uważane jest sprzęgło elastyczne łączące wały. Okazało się, że jednym z typów sprzęgieł łączących wały, które są szczególnie wskazane do osiągnięcia tego celu, są pneumatyczne sprzęgła elastyczne łączące wały, które pełnią funkcję tzw. tłumików drgań skrętnych. Problematyka rozwoju i badań pneumatycznych tłumików drgań skrętnych, oprócz innych zagadnień, od wielu lat znajduje się w centrum zainteresowań autora. Istnienie tłumików stwarza możliwość stosowania nowych sposobów strojenia układów mechanicznych drgających skrętnie. Celem niniejszego artykułu jest przedstawienie działalności patentowej autora w dziedzinie konstruowania pneumatycznych tłumików drgań skrętnych oraz ich zastosowania w układach mechanicznych drgających skrętnie.