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Wyszukujesz frazę "Stosiak, M." wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
Reduction of infrasounds in machines with hydrostatic drive
Autorzy:
Kudźma, Z.
Stosiak, M.
Powiązania:
https://bibliotekanauki.pl/articles/306472.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
infrasounds
vibrations
pressure fluctuation
damper
ultradźwięki
drgania
tłumiki
Opis:
Some hazards posed by the operation of hydraulic systems, connected with low-frequency vibrations and noise are presented. Special attention is focused on infrasounds. The sources of low-frequency vibrations and noise and ways of reducing them are indicated. An original solution ensuring the effective reduction of vibrations and noise in a wide frequency range, i.e., a wide-band damper of pressure fluctuations, also performing the function of an acoustic filter, is proposed. The effectiveness of the damper was confirmed by the results of laboratory tests and tests carried out on engineering machines working in real conditions.
Źródło:
Acta of Bioengineering and Biomechanics; 2013, 15, 2; 51-64
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Low-frequency pressure fluctuation damper based on hydropneumatic spring with constant stiffness
Autorzy:
Figiel, A.
Kudźma, Z.
Stosiak, M.
Powiązania:
https://bibliotekanauki.pl/articles/279774.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
damper
pressure fluctuation
infrasounds
Opis:
A wide spectrum of pressure fluctuation frequencies occurs in hydraulic systems. Particularly hazardous and difficult to eliminate are pressure fluctuations in the range up to 50 Hz, resulting in the generation of infrasounds by machines equipped with a hydrostatic drive. The best protection against the harmful effect of ultrasounds is to suppress them at the very source, i.e. to eliminate the causes of the generation of this noise. This paper presents a concept of reducing pressure fluctuation in the range of low excitation frequencies by means of a low-frequency damper of special design. The basis for designing pressure fluctuation dampers effective in reducing pressure fluctuation amplitudes in the range of low frequencies (< 50 Hz), which also function as acoustic filters of the generated infrasounds, is provided. The effectiveness of the low-frequency damper in reducing pressure fluctuation amplitudes has been experimentally tested. The damper was found to be most effective when its eigenfrequency coincided with the excitation frequency to be reduced.
Źródło:
Journal of Theoretical and Applied Mechanics; 2018, 56, 3; 841-855
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of external mechanical vibrations on hydraulic microvalves. Test stand design and preliminary tests
Autorzy:
Stosiak, M.
Towarnicki, K.
Lubecki, A.
Powiązania:
https://bibliotekanauki.pl/articles/1189964.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
mikrohydraulika
zawór przelewowy
drgania
pulsacja ciśnienia
microhydraulics
pressure relief valve
vibration
pressure fluctuation
Opis:
Fluid pressure fluctuations in a microhydraulic system can be caused by fluctuations in the rate of fluid delivery, due to the operational kinematics of the micropump’s displacement elements, as well as by external excitations. This paper presents the requirements for microhydraulic systems and indicates the disturbances that can occur during operation. A test stand was designed to identify the impact of external mechanical vibrations on microhydraulic elements. Test stand was equipped with a measuring system to generate and record vibrations and examine their effect on the operation of microhydraulic components. Set parameters and operating conditions of the system during measurements were given. A relief microvalve was chosen, as a representative microhydraulic component. Based on the measurements, additional component derived from external vibrations was identified in frequency spectrum of pressure pulsations.
Źródło:
Interdisciplinary Journal of Engineering Sciences; 2018, 6, 1; 48--52
2300-5874
Pojawia się w:
Interdisciplinary Journal of Engineering Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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