Compensation of a hydraulic pipeline resonance by fluid–structure interaction

Authors

  • Gudrun Mikota aInstitute of Machine Design and Hydraulic Drives, Johannes Kepler University Linz, Linz, Austria
  • Rainer Haas Linz Center of Mechatronics GmbH, Linz, Austria
  • Evgeny Luckachev Rainer Haas studied mechatronics at the JKU Linz and was a research assistant at the Institute of Machine Design and Hydraulic Drives, where he received his PhD in 2013. His thesis deals with identification of fluid compressibility and simulation of wave propagation including non-linear fluid laws. He is currently employed as a senior engineer at the LCM GmbH.

DOI:

https://doi.org/10.1080/14399776.2017.1366245

Keywords:

Pipeline dynamics, hydraulic behaviour, axial tension, bending, coupling, vibration, compensation

Abstract

ABSTRACT

For a pipeline between a valve block and a cylinder, the second hydraulic resonance is compensated by adding an appropriate mass in the most flexible part of the pipeline structure. The second maximum in the magnitude of measured pressure can thus be reduced to 65%. Frequency response functions between flow rate excitation and pressure as well as velocity response are calculated from a plane analytical model, including junction coupling. Results are validated against measurements in configurations with and without additional mass and
with different layers of rubber in between. Calculated pressure responses clearly reproduce the measured compensation effect, and the model also provides a rough approximation of structural vibrations.

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Author Biographies

Gudrun Mikota, aInstitute of Machine Design and Hydraulic Drives, Johannes Kepler University Linz, Linz, Austria

Gudrun Mikota studied mechanical engineering
at Vienna University of Technology,
where she received her PhD in 2001. She
worked with Jenbacher AG and LCM GmbH
in the fields of vibration engineering and
fluid power systems. Currently, she is a senior
scientist at the JKU Institute of Machine
Design and Hydraulic Drives.

Rainer Haas, Linz Center of Mechatronics GmbH, Linz, Austria

Rainer Haas studied mechatronics at the
JKU Linz and was a research assistant at the
Institute of Machine Design and Hydraulic
Drives, where he received his PhD in 2013.
His thesis deals with identification of fluid
compressibility and simulation of wave
propagation including non-linear fluid laws.
He is currently employed as a senior engineer
at the LCM GmbH.

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Published

2018-12-20

How to Cite

Mikota, G., Haas, R., & Luckachev, E. (2018). Compensation of a hydraulic pipeline resonance by fluid–structure interaction. International Journal of Fluid Power, 19(1), 14–26. https://doi.org/10.1080/14399776.2017.1366245

Issue

2018: Vol 19 Iss 1

Section

Original Article