Experimental application of the V.F.M. to the identification of material properties using vibrating plate

Alain Giraudeau*, Baoqiao Guo, Fabrice Pierron

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The paper presents a novel procedure to derive both stiffness and damping parameters from forced vibrating isotropic plates. The theory assumes that displacement and curvature fields are measured on the whole surface of the plate using a suitable optical technique. These data are processed with the Virtual Fields Method (VFM). In the case of an elastic isotropic material with viscous damping, the method leads to a linear system of equations valid for any excitation frequency. So the identification is possible out of resonance. A particular experimental set up is used for excitation and measurement of the kinematic fields. Measurement of the slope fields are taken at two times : in phase and at π/2 lag, using a phase shifting treatment of images of the plate taken with a CCD camera triggered by the excitation. First results of measurements and identifications are presented.

Original languageEnglish
Title of host publicationProceedings of the 2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics
Pages1243-1250
Number of pages8
Publication statusPublished - 2005
Externally publishedYes
Event2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics - Portland, OR, United States
Duration: 7 Jun 20059 Jun 2005

Publication series

NameProceedings of the 2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics

Conference

Conference2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics
Country/TerritoryUnited States
CityPortland, OR
Period7/06/059/06/05

Keywords

  • Damping
  • Forced vibrations
  • Identification
  • Optical measurements
  • Slope fields
  • Vibrations
  • Virtual fields Method

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