Determination of the mechanical properties in the avian middle ear by inverse analysis
Faculty of Sciences. Physics
S.l. , 2014
Comsol Conference, Cambridge, 2014
University of Antwerp
This paper presents the study of the avian middle ear as a biomechanical system, which is typically made up of a single hearing ossicle, the columella. So far, only few is known about the functioning of the avian middle ear. To gain new information about the mechanical properties of this system, a finite element model was created using a viscoelastic characterization, for which the geometry was extracted from μCT scans recorded from the middle ear of a mallard duck. Some of the unknown model parameters were determined by performing an inverse analysis, in which the model output is compared with the outcome of optical interferometric experiments, like stroboscopic digital holography and laser Doppler vibrometry. As a result of this procedure, several parameter values of different middle ear structures could be found.