000008850 001__ 8850
000008850 005__ 20141204083526.0
000008850 04107 $$aeng
000008850 046__ $$k12/05/2014
000008850 100__ $$aOndra, V.
000008850 24500 $$aCOMPARISON OF MODAL PARAMETER ESTIMATION TECHNIQUES FOR EXPERIMENTAL MODAL ANALYSIS

000008850 24630 $$n20.$$pEngineering Mechanics 2014
000008850 260__ $$bBrno University of Technology- Institute of Solid Mechanics, Mechatronics and Biomechanics
000008850 506__ $$arestricted
000008850 520__ $$2eng$$aThis 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.

000008850 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000008850 653__ $$aExperimental Modal Analysis, Modal Parameter Estimation, Modal Assurance Criterion.

000008850 7112_ $$aEngineering Mechanics 2014$$cSvratka (CZ)$$d12/05/2014 - 15/05/2014$$gEM2014
000008850 720__ $$aOndra, V.$$iLošák, P.
000008850 8560_ $$ffischerc@itam.cas.cz
000008850 8564_ $$s575188$$uhttp://invenio.itam.cas.cz/record/8850/files/101-Ondra-CD.pdf$$yOriginal version of the author's contribution as presented on CD, paper No. 101.
000008850 962__ $$r70
000008850 980__ $$aPAPER