Skip to Main content Skip to Navigation
Conference papers

A method to measure elastic and dissipative material properties of sandwich structures and its numerical validation

Abstract : A method to measure elastic and dissipative properties of the constituents of a sandwich structure is proposed and validated. The method relies on the comparison between (a) the modal frequen- cies and dampings of a thick plate as predicted by an extended Rayleigh-Ritz procedure and (b) the their values as given by experimentation or numerical simulation. On real plates, a one-point measurement of free vibrations is sufficient, provided that a high-resolution modal analysis [1] is used [2]. For valida- tion purposes, the experimental modal analysis is replaced by a finite-element model analysis (numerical measurement). Minimising the differences between the modal characteristics yields an estimation of the values of the elastic and dissipative material properties. Agreement between estimated and original mechanical parameters is shown to be good for the parameters which are influential in plate vibration.

See http://hal.archives-ouvertes.fr/docs/00/59/28/82/ANNEX/r_0PBFPY04.pdf
Complete list of metadatas

Cited literature [14 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-00592882
Contributor : François Gibier <>
Submitted on : Tuesday, May 3, 2011 - 2:00:00 PM
Last modification on : Monday, February 10, 2020 - 6:14:05 PM
Document(s) archivé(s) le : Thursday, August 4, 2011 - 3:45:28 AM

Files

Identifiers

  • HAL Id : hal-00592882, version 1

Citation

Marc Rébillat, Xavier Boutillon. A method to measure elastic and dissipative material properties of sandwich structures and its numerical validation. 10e colloque national en calcul des structures, May 2011, Giens, France. 8 p. ; Clé USB. ⟨hal-00592882⟩

Share

Metrics

Record views

382

Files downloads

177