Low-frequency pressure fluctuation damper based on hydropneumatic spring with constant stiffness

• Autorzy: Figiel A. , Kudźma Z. , Stosiak M.

Identyfikatory

DOI

10.15632/jtam-pl.56.3.841

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

damper; pressure fluctuation; infrasounds

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2018
• Tom: Vol. 56 nr 3
• Strony: 841—855
• Opis fizyczny: Bibliogr. 19 poz., rys.

Twórcy

autor

Figiel A.

• Wrocław University of Science and Technology, Faculty of Technology and Engineering, Wrocław, Poland

autor

Kudźma Z.

• Wrocław University of Science and Technology, Faculty of Technology and Engineering, Wrocław, Poland

autor

Stosiak M.

• Wrocław University of Science and Technology, Faculty of Technology and Engineering, Wrocław, Poland

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).