| 研究生: |
張瀚文 Chang, Han-Wen |
|---|---|
| 論文名稱: |
非對稱複材疊層板之邊界元素設計 BEM Design for the Analysis of Unsymmetric Composite Laminates |
| 指導教授: |
胡潛濱
Hwu, Chyanbin 梁燕祝 Liang, Yen-Chu |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 航空太空工程學系 Department of Aeronautics & Astronautics |
| 論文出版年: | 2007 |
| 畢業學年度: | 95 |
| 語文別: | 中文 |
| 論文頁數: | 79 |
| 中文關鍵詞: | 複合材料 、偶合問題 、非對稱疊層 、邊界積分式 、邊界元素法 |
| 外文關鍵詞: | BEM, RDBEM, boundary integral equations, regular direct boundary element method, composite laminates, boundary element method, bending-stretching coupling |
| 相關次數: | 點閱:122 下載:3 |
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本論文提出了新的邊界元素法,解決異向性複材疊層板之伸縮-彎矩偶合問題。利用異向性彈性力學的史磋方程式,可以獲得異向性複材疊層板的伸縮-彎矩偶合問題之位移與曳引力基本解。此外,可根據貝蒂互換定律,推得伸縮-彎矩偶合問題之邊界積分方程式。爾後,此類問題的邊界元素方程式如是建立。本論文研究目標不止關注在面積分與角點力的處理上,還包括對於邊界源點所在位置造成之影響進行討論。為了呈現本方法的精確度與效率,數值結果包括與正解和目前可用以比較之商用軟體模擬結果作驗證。其結果顯示本論文新發展之邊界元素法,對處理伸縮-彎矩偶合問題,具備高效率與高準確率之特色。
A new algorithm has been developed to deal with the bending-stretching coupling problems of layered anisotropic plates in this thesis. By employing Stroh-like formalism for anisotropic elasticity, the fundamental solutions of displacements and tractions for the bending-stretching coupling analysis of composite laminates have been obtained. Moreover, according to the reciprocal theorem of Betti and Raleigh, the boundary integral equations for the bending-stretching coupling analysis have also been derived. Thus, the boundary element formulation for the bending-stretching coupling analysis of composite laminates is established. The aim of this thesis is focused not only on the treatment of the domain integrals and corner force, but also the position of boundary source points. Numerical results are demonstrated to show the accuracy and efficiency by comparing with either the exact solutions or with results from alternative numerical techniques. The present BEM algorithm is found to be efficient and accurate for the bending-stretching coupling analysis.
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