R&D result detail

Original Title

Axial and Pressure Thrust Stiffness of Metal Bellows for Vibration Isolators

English Title

Axial and Pressure Thrust Stiffness of Metal Bellows for Vibration Isolators

Type

Paper in proceedings (conference paper)

Original Abstract

Metal bellows are used as a spring element and simultaneously as a container (shell) for a damping medium in vibration isolators, especially in applications where any leakage is inadmissible. Dynamic behaviour of these isolators is affected by axial stiffness of bellows and by a resistance against axial deformation of bellows filled with fluid, which is in this article called pressure thrust stiffness. A method of the pressure thrust stiffness determination is discussed in this study. The method uses FEM model, which has been verified by stiffness measurement of a chosen bellows. Consequently, the sensitivity analysis of bellows dimensions to axial and pressure thrust stiffness was performed to find a dimension parameter of bellows which allows to adjust the ratio between axial and pressure thrust stiffness. Sensitivity analysis shows that the stiffness ratio of metal bellows can be adjusted by two dimensional parameters - mean diameter of bellows and corrugation width.

English abstract

Metal bellows are used as a spring element and simultaneously as a container (shell) for a damping medium in vibration isolators, especially in applications where any leakage is inadmissible. Dynamic behaviour of these isolators is affected by axial stiffness of bellows and by a resistance against axial deformation of bellows filled with fluid, which is in this article called pressure thrust stiffness. A method of the pressure thrust stiffness determination is discussed in this study. The method uses FEM model, which has been verified by stiffness measurement of a chosen bellows. Consequently, the sensitivity analysis of bellows dimensions to axial and pressure thrust stiffness was performed to find a dimension parameter of bellows which allows to adjust the ratio between axial and pressure thrust stiffness. Sensitivity analysis shows that the stiffness ratio of metal bellows can be adjusted by two dimensional parameters - mean diameter of bellows and corrugation width.

Keywords

metal bellows; axial stiffness; pressure thrust stiffness; vibration isolator

Key words in English

metal bellows; axial stiffness; pressure thrust stiffness; vibration isolator

Authors

MACHÁČEK, O.; KUBÍK, M.; STRECKER, Z.; ROUPEC, J.; NOVÁK, P.; MAZŮREK, I.

RIV year

2019

Released

26.02.2018

Book

MATEC Web of Conferences

ISBN

2261-236X

Periodical

MATEC web of conferences

Volume

153

Number

2018

State

French Republic

Pages from

1

Pages to

5

Pages count

5

URL

https://www.matec-conferences.org/articles/matecconf/pdf/2018/12/matecconf_icmme2018_06001.pdf

BibTex

@inproceedings{BUT146173,
  author="Ondřej {Macháček} and Michal {Kubík} and Zbyněk {Strecker} and Jakub {Roupec} and Petr {Novák} and Ivan {Mazůrek}",
  title="Axial and Pressure Thrust Stiffness of Metal Bellows for Vibration
Isolators",
  booktitle="MATEC Web of Conferences",
  year="2018",
  journal="MATEC web of conferences",
  volume="153",
  number="2018",
  pages="1--5",
  doi="10.1051/matecconf/201815305005",
  issn="2274-7214",
  url="https://www.matec-conferences.org/articles/matecconf/pdf/2018/12/matecconf_icmme2018_06001.pdf"
}