頁籤選單縮合
題 名 | Frequency Discrimination Characteristics of Cochlear Basilar Membrane Using a Fluid/Structure Model |
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作 者 | Wo,Andrew M.; Chen,Chi-fang; Hsu,Yi-feng; Liang,Jeffrey; | 書刊名 | The Chinese Journal of Mechanics |
卷 期 | 18:1 2002.03[民91.03] |
頁 次 | 頁1-7 |
分類號 | 334.7 |
關鍵詞 | Basilar membrane; Cochlear; Fluid/structure interaction; Vibration mechanics; |
語 文 | 英文(English) |
英文摘要 | This paper addresses the vibratory mechanics associated with frequency discriminaton of basilar membrance 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 membrance structure causing its vibratory motion. Solution porcedure 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 bsailar 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 attenuatin 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. |
本系統中英文摘要資訊取自各篇刊載內容。