Detail publikace

Comparison of Modal Parameter Estimation Techniques For Experimental Modal Analysis

ONDRA, V. LOŠÁK, P.

Originální název

Comparison of Modal Parameter Estimation Techniques For Experimental Modal Analysis

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

This paper deals with comparison of three commonly used modal parameter estimation methods (Pick Picking, Least Square Complex Exponential and Eigensystem Realization Algorithm) in order to judge about their accuracy and limitation. There have been invented a great amount of modal parameter estimation techniques in the field of experimental modal analysis. However, there is not universal method which would be suitable for every possible structure and/or with acceptable accuracy. As a test structure, 15 degrees of freedom plane with given mass, damping and stiffness was chosen. The foundations of discussed methods are described, their implementation on the test structure is shown and finally, natural frequencies and damping obtained by analytical approach are compared with those estimated using mentioned techniques. In addition, mode shapes differences are illustrated by means of Modal Assurance Criterion. Based on these comparisons, an accuracy and limitation of the methods is summarized in the conclusion.

Klíčová slova

Experimental Modal Analysis, Modal Parameter Estimation, Modal Assurance Criterion

Autoři

ONDRA, V.; LOŠÁK, P.

Rok RIV

2014

Vydáno

12. 5. 2014

ISBN

978-80-214-4871-1

Kniha

ENGINEERING MECHANICS 2014

Edice

1

Číslo edice

2014

Strany od

460

Strany do

463

Strany počet

762

BibTex

@inproceedings{BUT108006,
  author="Václav {Ondra} and Petr {Lošák}",
  title="Comparison of Modal Parameter Estimation Techniques For Experimental Modal Analysis",
  booktitle="ENGINEERING MECHANICS 2014",
  year="2014",
  series="1",
  number="2014",
  pages="460--463",
  isbn="978-80-214-4871-1"
}