| 研究生: |
李幸龍 Lee, Hsing-Lung |
|---|---|
| 論文名稱: |
應用DQEM分析軸向分佈力對含初始曲率之Timoshenko樑的變形之影響 Application of DQEM to the Analysis of the Influence of axially distributed force on a Timoshenko Beam having an Initial Curvature |
| 指導教授: |
陳長鈕
Chen, Chang-New |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 系統及船舶機電工程學系 Department of Systems and Naval Mechatronic Engineering |
| 論文出版年: | 2007 |
| 畢業學年度: | 95 |
| 語文別: | 中文 |
| 論文頁數: | 126 |
| 中文關鍵詞: | 初始曲率 、軸向分佈力 |
| 外文關鍵詞: | Timoshenko, DQEM |
| 相關次數: | 點閱:84 下載:3 |
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數值積分表示微分元素法(DQEM)為 陳長鈕老師所研究開發出來的一種結構分析研究的數值方法;除了能有系統地編成電腦程式外,也可以更有效地求得精確的解。
數值積分表示微分元素法將欲分析的結構物分割成有限個元素,然後利用數值積分表示微分的技巧,對定義於各個元素的微分或偏微分關係式做數值的離散化;之後考慮在整體結構物的離散點滿足所應具有的力學微分關係式的條件下,可得到結構物的離散方程式系統。
本文應用陳長鈕老師獨創之數值積分表示微分元素法(DQEM)分析具 軸向分佈力對含初始曲率之Timoshenko樑的變形之影響,並且編寫求解的電腦程式,將其用於分析數種等斷面或變斷面樑的結構問題;證明數值積分表示微分元素法對於靜態結構問題分析模式的優越,及証明此方法所撰寫的電腦程式可有效的減少CPU所需的計算時間。
The differential quadrature element method (DQEM) proposed by Dr.C.N. Chen is a numerical analysis method for analyzing continuum mechanics problems.
The DQEM is used to solve the influence of axially distributed force on a Timoshenko beam having an initial curvature. This approach uses the differential quadrature (DQ) to discretize the governing differential equations defined on all elements, the transition conditions defined on the inter-element boundaries of two adjacent elements, and the boundary conditions of the beam. By assembling all the discrete relation equations, a global linear algebraic system can be obtained. Numerical results of the solutions of beams resting on a foundations obtained by the DQEM are presented.
The numerical procedure of this method can systematically implement into a computer program. The coupling of solutions at discrete points is strong. In addition, all fundamental relations are considered in constructing the overall discrete algebraic system. Consequently, convergence can be assured by using less discrete points, and accurate results can be obtained by using less arithmetic operations with which the computer CPU time required can to reduce.
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