https://scholars.lib.ntu.edu.tw/handle/123456789/79920
Title: | Frequency Discrimination Characteristics Of Cochlear Basilar Membrane Using A Fluid/Structure Model | Authors: | Wo, Andrew M. Chen, Chi-Fang Hsu, Yi-Feng Liang, Jeffrey |
Keywords: | Basilar membrane; Cochlear; Fluid/structure interaction; Vibration mechanics | Issue Date: | 2002 | Journal Volume: | 18 | Journal Issue: | 1 | Start page/Pages: | 1-7 | Source: | The Chinese Journal of Mechanics | Abstract: | This paper addresses the vibratory mechanics associated with frequency discrimination of basilar membrane within the cochlear of the inner ear. Periodic excitation is provided to the oval window, which results in generation of waves within the fluid-filled cochlear traveling towards the apex. These waves interact with the compliant basilar membrane structure causing its vibratory motion. Solution procedure of the fluid/structure model consists of a two-step process. First, a finite element calculation (ANSYS) solves for the membrane vibration with an initial harmonic pressure distribution. Second, a control volume analysis links the resultant vibratory motion with the fluid pressure acting on the basilar membrane, thus a pressure feedback loop is accomplished. Results show that dominant factors affecting vibratory characteristics of the basilar membrane are its structural geometry and attenuation of pressure wave as it travels away from the oval window. Calculations clearly capture the designed function of the basilar membrane, principally its frequency discrimination behavior. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/107083 https://www.scopus.com/inward/record.uri?eid=2-s2.0-0037804763&doi=10.1017%2fS1727719100001969&partnerID=40&md5=7226258bb22d01b5e7bf03c306f79626 |
ISSN: | 17277191 | SDG/Keyword: | Finite element method; Fluid structure interaction; Geometry; Pressure distribution; Sensory perception; Cochlear basilar membrane; Frequency discrimination; Vibration mechanics; Biomechanics |
Appears in Collections: | 應用力學研究所 |
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