Publication detail

COMPARISON OF TWO METHODS OF MODAL ANALYSIS AND AGREEMENT WITH MODEL

KREJČÍ, J. BENEŠ, P.

Original Title

COMPARISON OF TWO METHODS OF MODAL ANALYSIS AND AGREEMENT WITH MODEL

English Title

COMPARISON OF TWO METHODS OF MODAL ANALYSIS AND AGREEMENT WITH MODEL

Type

abstract

Language

en

Original Abstract

This article deals with modal analysis and compares two methods of determining a modal model of a simple free beam. One method uses roving excitation by modal hammer and static sensing by accelerometer. Second method applies static excitation by vibration test system and roving sensing by 2D laser interferometer. Both methods are compared by their results, advantages and disadvantages, also agreement of measurement, calculated model and simulated model by finite element method is performed. Difference of the Eigen-frequencies is lower than 4 %. Finally, achieved repeatability of both methods with different operators is lower than 0.5 %.

English abstract

This article deals with modal analysis and compares two methods of determining a modal model of a simple free beam. One method uses roving excitation by modal hammer and static sensing by accelerometer. Second method applies static excitation by vibration test system and roving sensing by 2D laser interferometer. Both methods are compared by their results, advantages and disadvantages, also agreement of measurement, calculated model and simulated model by finite element method is performed. Difference of the Eigen-frequencies is lower than 4 %. Finally, achieved repeatability of both methods with different operators is lower than 0.5 %.

Keywords

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

Released

09.04.2019

Location

Brno

ISBN

978-80-214-5733-1

Book

ERIN 2019

Edition

1

Edition number

1

Pages from

23

Pages to

23

Pages count

1

Documents

BibTex


@misc{BUT160694,
  author="Jakub {Krejčí} and Petr {Beneš}",
  title="COMPARISON OF TWO METHODS OF MODAL ANALYSIS AND AGREEMENT WITH MODEL",
  annote="This article deals with modal analysis and compares two methods of determining a modal model of a simple free beam. One method uses roving excitation by modal hammer and static sensing by accelerometer. Second method applies static excitation by vibration test system and roving sensing by 2D laser interferometer. Both methods are compared by their results, advantages and disadvantages, also agreement of measurement, calculated model and simulated model by finite element method is performed. Difference of the Eigen-frequencies is lower than 4 %. Finally, achieved repeatability of both methods with different operators is lower than 0.5 %.",
  booktitle="ERIN 2019",
  chapter="160694",
  edition="1",
  howpublished="print",
  year="2019",
  month="april",
  pages="23--23",
  type="abstract"
}