Identification of Parameters for the Middle Ear Model | Zendy

Matthias Bornitz | Zendy; Thomas Zahnert | Zendy; HansJürgen Hardtke | Zendy; KarlBernd Hüttenbrink | Zendy

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Identification of Parameters for the Middle Ear Model

Author(s) -

Matthias Bornitz,

Thomas Zahnert,

HansJürgen Hardtke,

KarlBernd Hüttenbrink

Publication year - 1999

Publication title -

audiology and neurotology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.106

H-Index - 78

eISSN - 1421-9700

pISSN - 1420-3030

DOI - 10.1159/000013836

Subject(s) - eardrum , orthotropic material , middle ear , finite element method , acoustics , laser doppler vibrometer , stiffness , sensitivity (control systems) , structural engineering , materials science , physics , engineering , optics , laser , electronic engineering , anatomy , medicine , distributed feedback laser

This paper presents a method of parameter identification for a finite-element model of the human middle ear. The parameter values are estimated using a characterization of the difference in natural frequencies and mode shapes of the tympanic membrane between the model and the specimens. Experimental results were obtained from temporal bone specimens under sound excitation (300-3,000 Hz). The first 3 modes of the tympanic membrane could be observed with a laser scanning vibrometer and were used to estimate the stiffness parameters for the orthotropic finite-element model of the eardrum. A further point of discussion is the parameter sensitivity and its implication for the identification process.

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