| 研究生: |
江啟榮 Chiang, Chi-Jung |
|---|---|
| 論文名稱: |
新式非線性潛滑模型於鐵路車輛轉向架之動態穩定性分析 hunting stability analysis of railway vehicle truck system with nonlinear creep models |
| 指導教授: |
李森墉
Lee, Sen-Yung |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 機械工程學系 Department of Mechanical Engineering |
| 論文出版年: | 2008 |
| 畢業學年度: | 96 |
| 語文別: | 中文 |
| 論文頁數: | 93 |
| 中文關鍵詞: | 潛滑模型 |
| 外文關鍵詞: | hunting, creep model |
| 相關次數: | 點閱:77 下載:2 |
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關於軌道車輛的穩定性分析已有多年歷史,在本論文文獻回顧中將從最早的Hertz理論開始做介紹,逐步探究各理論發展過程,最後介紹Heuristic非線性理論,並藉由改進文獻中不合理的假設,套用模型做數據模擬分析與討論。在本論文中總潛滑力的部份,提出一種考慮潛滑力矩 的新模型,並與舊有模型(Heuristic 非線性模型)及線性模型做比較。選用最簡單的六個自由度的轉向架模型,並考慮行駛於彎曲軌道上的車輛系統推導其運動方程式,配合「Lyapunov’s indirect method (Lyapunov’s間接法)」做系統穩定性的分析。最後經由數值分析所得的數據圖形,針對車體轉向架模型系統內部及外部各項參數,做新舊模型及線性模型的比較,並且對於提升車輛系統臨界速度 的策略做討論。藉此了解新舊模型差異,並且掌握軌道車輛的穩定性與安全性。
About the stability analysis of railway vehicle system has been discussed for years. In reference reviews, we will introduce all about these theories, including linear and nonlinear theories. Finding out these theories, and improving the inconsequent assumptions. In this paper, we presented a new model of total creep force, and compared with the original model (heuristic nonlinear model) and linear model. Considering the simplicity car body model with 6 degree of freedom (6 DOF) that moving on the curved tracks, and calculate the motion equations of the railway vehicle system. Lyapunov’s indirect method is used to analyze the stability of the vehicle system. From the diagram of numerical analysis in this paper, the influence of interior or exterior parameters about critical speed will be discussed and compared with other models, so as to realize the model differences, and the stability and the safety of vehicle.
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