臺灣博碩士論文加值系統

本論文主要是藉由流體力學Navier-Stokes方程及有限元素法（finite element method）ANSYS軟體來模擬基底膜震動，再與實驗數據比對，進而決定基底膜材料性質：楊氏係數及蒲松比，最後模擬出在不同的聲音頻率下基底膜震動情形。
基底膜最重要的功能為頻率分析，本文另外利用內耳基底膜作震動模態分析，以求得基底膜的自然震動頻率，進而觀察基底膜頻率響應的關係。
經由模態分析中可發現基底膜對頻率響應關係主要源自於材料性質及幾何形狀，而幾何形狀中以基底膜厚度佔最重要的因素，而材料性質以楊氏係數為最重要的成分。

摘要i
符號說明ii
圖目錄vii
表目錄ix
第1章 緒論1
1-1 研究背景與動機1
1-2 文獻回顧 4
1-3 研究目標 8
1-4 論文章節簡介8
第2章 內耳基底膜模型建立及分析方法10
2-1 內耳基底膜模型10
2-2 基底膜模型建構11
2-3 基底膜壓力分析13
第3章 壓力分析運算程序與ANSYS分析原理19
3-1 壓力分析運算程序19
3-1.1 卵形窗壓力19
3-1.2 中耳傳輸方程式20
3-1.3 傅立葉轉換(Fourier Transform) 21
3-1.4 ANSYS軟體誤差分析22
3-2 分析步驟 23
3-3 基底膜模態分析26
3-4 ANSYS分析原理28
3-4.1 ANSYS動態分析原理28
3-4.2 ANSYS模態分析原理29
第4章 數值結果與討論31
4-1 基底膜厚度線性變化31
4-1.1元素（ELEMENT）類別31
4-1.2 材料性質.35
4-2 基底膜厚度指數函數變化.36
4-2.1 模態分析響應.36
4-2.2 動態分析響應.38
第5章 結論與未來展望39
5-1 結論…39
5-2 未來展望40
參考文獻41

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