| Autor: |
Böhnke, Frank, Semmelbauer, Sebastian, Marquardt, Torsten |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2016, Vol. 1703, p070013-1-070013-4, 4p |
| Abstrakt: |
The acoustic wave propagation in the human cochlea was studied using a tapered box-model with linear assumptions respective to all mechanical parameters. The discretisation and evaluation is conducted by a commercial finite element package (ANSYS). The main difference to former models of the cochlea was the representation of the basilar membrane by a 3D elastic solid. The Young's moduli of this solid were modified to study their influence on the travelling wave. The lymph in the scala vestibuli and scala tympani was represented by a viscous and nearly incompressible fluid finite element approach. Our results show the maximum displacement for f = 2kHz at half of the length of the cochlea in accordance with former experiments. For low frequencies f < 200Hz nearly zero phase shifts were found, whereas for f = 1kHz it reaches values up to -12 cycles depending on the degree of orthotropy. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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