Detail publikačního výsledku

A comparison of two modal analysis methods: An impact hammer versus laser vibrometry

KREJČÍ, J.; BENEŠ, P.

Originální název

A comparison of two modal analysis methods: An impact hammer versus laser vibrometry

Anglický název

A comparison of two modal analysis methods: An impact hammer versus laser vibrometry

Druh

Článek WoS

Originální abstrakt

This paper presents a comparative experimental-analytical study on the performance of Multi-Input Single-Output (MISO) and Single-Input Multi-Output (SIMO) techniques to identify the modal properties of a cantilever beam. A 2-D laser interferometry was employed to perform the SIMO modal test, while for the MISO test configuration, a conventional accelerometer was used to measure the response of the structure. Comparing the experimentally-measured natural frequencies with those calculated by the FEM model, a maximum difference of 4% between natural frequencies was observed. The repeatability of both techniques is also investigated in this paper and it is shown that the difference between modal properties identified under different operators is less than 0.5% for both the MISO and SIMO techniques.

Anglický abstrakt

This paper presents a comparative experimental-analytical study on the performance of Multi-Input Single-Output (MISO) and Single-Input Multi-Output (SIMO) techniques to identify the modal properties of a cantilever beam. A 2-D laser interferometry was employed to perform the SIMO modal test, while for the MISO test configuration, a conventional accelerometer was used to measure the response of the structure. Comparing the experimentally-measured natural frequencies with those calculated by the FEM model, a maximum difference of 4% between natural frequencies was observed. The repeatability of both techniques is also investigated in this paper and it is shown that the difference between modal properties identified under different operators is less than 0.5% for both the MISO and SIMO techniques.

Klíčová slova

modal analysis, free beam, 2D interferometer, COMSOL, ModalVIEW

Klíčová slova v angličtině

modal analysis, free beam, 2D interferometer, COMSOL, ModalVIEW

Autoři

KREJČÍ, J.; BENEŠ, P.

Rok RIV

2021

Vydáno

19.11.2020

Nakladatel

Czech Technical University in Prague

Místo

Prague

ISSN

1805-2363

Periodikum

Acta Polytechnica

Svazek

60

Číslo

5

Stát

Česká republika

Strany od

420

Strany do

427

Strany počet

7

URL

https://ojs.cvut.cz/ojs/index.php/ap/article/view/6050

Plný text v Digitální knihovně

http://hdl.handle.net/11012/196547

BibTex

@article{BUT156812,
  author="Jakub {Krejčí} and Petr {Beneš}",
  title="A comparison of two modal analysis methods: An impact hammer versus laser vibrometry",
  journal="Acta Polytechnica",
  year="2020",
  volume="60",
  number="5",
  pages="420--427",
  doi="10.14311/AP.2020.60.0420",
  issn="1210-2709",
  url="https://ojs.cvut.cz/ojs/index.php/ap/article/view/6050"
}

Dokumenty

6050-Article Text-21557-1-10-20201102