Publication detail

Identification of Vibration Causes Based on Spectrograms During the Straightening Process

LOŠÁK, P.

English title

Identification of Vibration Causes Based on Spectrograms During the Straightening Process

Type

Paper in proceedings (conference paper)

Language

en

Original abstract

This paper deals with dynamic analysis of straightening machine loading during straightening process. During it, a crooked bar passing through the machine and the rollers and holders are subjected to the dynamic loadings. The rollers moment amplitudes depend, among others, on straightening speed, size of the bar curvature, bars diameter, and on friction between the bar and the rollers. The loading is time-varying and knowledge of the frequencies of the moment is important; it can be used for verification of the numerical simulation or for the straightening machine design. Machine operation close to resonance state can cause excessive vibration which can subsequently cause noise and adversely affect the life of the machine and also straightening accuracy. This paper is aimed to analyze frequency spectra of the moments, which are obtained from the computational simulation and find the possible causes of vibration. Although, the straightening process is complex, it was possible to identify three main causes of vibration which are presented as the results of this paper.

Keywords in English

Spectrogram, Dynamic Loading, Straightening Machine, Straightening Simulation

Released

2014-05-12

ISBN

978-80-214-4871-1

Book

ENGINEERING MECHANICS 2014

Pages from–to

368–371

Pages count

762

BIBTEX


@inproceedings{BUT108005,
  author="Petr {Lošák}",
  title="Identification of Vibration Causes Based on Spectrograms During the Straightening Process",
  booktitle="ENGINEERING MECHANICS 2014",
  year="2014",
  series="1",
  number="2014",
  pages="368--371",
  isbn="978-80-214-4871-1"
}