系統識別號 | U0002-2706200719005500 |
---|---|
DOI | 10.6846/TKU.2007.00880 |
論文名稱(中文) | 應用數值拉普拉斯逆轉換法於壓電材料動力破壞之研究 |
論文名稱(英文) | Dynamic Fracture Analysis of a Piezoelectric Crack by Using Numerical Inversion of Laplace Transform |
第三語言論文名稱 | |
校院名稱 | 淡江大學 |
系所名稱(中文) | 航空太空工程學系碩士班 |
系所名稱(英文) | Department of Aerospace Engineering |
外國學位學校名稱 | |
外國學位學院名稱 | |
外國學位研究所名稱 | |
學年度 | 95 |
學期 | 2 |
出版年 | 96 |
研究生(中文) | 廖雪吩 |
研究生(英文) | Hsueh-Fen Liao |
學號 | 694370098 |
學位類別 | 碩士 |
語言別 | 繁體中文 |
第二語言別 | |
口試日期 | 2007-06-21 |
論文頁數 | 137頁 |
口試委員 |
指導教授
-
應宜雄(ysing@mail.tku.edu.tw)
委員 - 馬劍清(ccma@ntu.edu.tw) 委員 - 劉昭華(chaohwa@mail.tku.edu.tw) |
關鍵字(中) |
壓電材料 數值拉普拉斯逆轉換法 有限長裂紋 動力破壞 應力強度因子 |
關鍵字(英) |
piezoelectric numerical inversion of Laplace transform finite crack dynamic fracture |
第三語言關鍵字 | |
學科別分類 | |
中文摘要 |
本文研究主題為應用數值拉普拉斯逆轉換法於無窮域內含不可誘電邊界靜止裂紋之壓電材料動力破壞問題,求解一含有限長靜止裂紋之壓電材料於裂紋面上受均佈反平面動態應力及平面動態電位移負載的暫態問題。本文運用了三種數值拉普拉斯逆轉換法分別為Durbin方法、趙氏方法ㄧ及趙氏方法二,首先利用簡單函數範例來比較這些數值法的準確性,並由計算經驗分別建議三種數值法的參數設定範圍;最後以數值拉普拉斯逆轉換法配合積分轉換技巧,解析含裂紋之壓電材料動力破壞問題,並將所求得之應力強度因子數值解做詳細的計算與討論。 |
英文摘要 |
In this study, the dynamic fracture analysis of an infinite piezoelectric material containing a finite crack with impermeable boundary conditions is investigated by using numerical inversion of Laplace transform. The finite crack is subjected to uniformly anti-plane stress and in-plane electric displacement impacts. Three numerical methods, Durbin’s method, Zhao’s method 1 and Zhao’s method 2 are used in this study. The accuracy is examined through some specified functions and the applicable numerical parameters are suggested respectively by the experience of calculation. Finally, the dynamic fracture analysis of a piezoelectric crack is carried out by numerical inversion of Laplace transform and the technique of integral transformation. Numerical solutions for dynamic stress intensity factors are evaluated and discussed in detail. |
第三語言摘要 | |
論文目次 |
目 錄 中文摘要 ……………………………………………………………… I 英文摘要 …………………………………………………………… II 目錄 ………………………………………………………………… IV 表目錄 …………………………………………………………… VI 圖目錄 …………………………………………………………… VIII 第一章 緒論 …………………………………………………………1 1.1 研究動機 ………………………………………………1 1.2文獻回顧 ………………………………………………3 1.3內容簡介 ………………………………………………6 第二章 數值拉普拉斯逆轉換………………………………………8 2.1 拉普拉斯轉換及逆轉換……………………………8 2.2 Durbin方法…………………………………………9 2.3 趙氏方法一 (Zhao’s method1)………………………19 2.4 趙氏方法二 (Zhao’s method2)………………………22 2.5 簡單數值範例…………………………………………27 第三章 壓電材料動力破壞之應用…………………………35 3.1 問題描述…………………………………………35 3.2 理論解析…………………………………………37 第四章 數值結果與討論………………………………………55 4.1 求解弗萊德積分方程式之數值法…………55 4.1.1 高斯積分法…………………………………55 4.1.2 L.U.法………………………………………56 4.1.3 求解弗萊德積分方程式………………………58 4.2 數值結果比較…………………………………63 第五章 結論與展望…………………………………………72 5.1 本文結論…………………………………………72 5.2 本文成果……………………………………………72 5.3 尚待研究的方向……………………………………73 參考文獻………………………………………………………………75 表 目 錄 表2-1 文獻範例 運用三種數值方法之結果………………………81 表2-2 文獻範例 運用三種數值方法之結果………………………82 表2-3 文獻範例 運用三種數值方法之結果………………………83 表2-4 文獻範例 運用三種數值方法於較佳設定參數之結果……84 表2-5 文獻範例 運用三種數值方法於較佳設定參數之結果………85 表2-6 文獻範例 運用三種數值方法於較佳設定參數之結果………86 表2-7 Durbin數值方法比較範例結果……………………………87 表2-8 Durbin方法比較 範例結果………………………………88 表2-9 趙氏數值方法一比較 範例結果……………………………89 表2-10 趙氏數值方法一比較 範例結果…………………………90 表2-11 趙氏數值方法二比較 範例結果…………………………91 圖 目 錄 圖2-1 及 、 、 之圖形…………………………92 圖2-2 及 、 、 之圖形…………………………93 圖2-3 發散及 、 、 之圖形……………………94 圖2-4 收斂及 、 、 之圖形……………………95 圖2-5 於Durbin方法逆轉換在不同週期 之比較圖……………96 圖2-6 於Durbin方法逆轉換在不同週期 之比較圖……………97 圖2-7 於Durbin方法逆轉換在不同 之比較圖…………………98 圖2-8 於Durbin方法逆轉換在不同 之比較圖…………………99 圖2-9 於Durbin方法逆轉換在不同項數 之比較……………100 圖2-10 於Durbin方法逆轉換在不同項數 之比較……………101 圖2-11 於趙氏方法一逆轉換在不同週期 之比較……………102 圖2-12 於趙氏方法一逆轉換在不同週期 之比較……………103 圖2-13 於趙氏方法一逆轉換在不同項數 之比較……………104 圖2-14 於趙氏方法一逆轉換在不同項數 之比較……………105 圖2-15 於趙氏方法二逆轉換在不同週期 之比較……………106 圖2-16 於趙氏方法二逆轉換在不同週期 之比較……………107 圖2-17 於趙氏方法二逆轉換在不同項數 之比較……………108 圖2-18 於趙氏方法二逆轉換在不同項數 之比較……………109 圖2-19 於三種數值法逆轉換之比較圖………………………110 圖2-20 於三種數值法逆轉換之比較圖………………………111 圖2-21 於三種數值法逆轉換之比較圖………………………112 圖2-22 三種數值法逆轉換結果之比較…………………………113 圖3-1 無窮域含裂紋壓電材料受反平面均佈應力及平面電位移負載之結構示意圖………………………………………………………114 圖4-1 無窮域含裂紋之彈性材料受反平面均佈應力運用不同數值法 之結果比較圖………………………………………………115 圖4-2 無窮域含裂紋之壓電材料運用Durbin方法於不同項數 時之比較圖………………………………………………116 圖4-3 無窮域含裂紋之壓電材料運用Durbin方法於不同項數 時之短時間比較圖………………………………………117 圖4-4 無窮域含裂紋之壓電材料運用趙氏方法一於不同項數 時之比較圖………………………………………………118 圖4-5 無窮域含裂紋之壓電材料運用趙氏方法一於不同項數 時之短時間比較圖………………………………………119 圖4-6 無窮域含裂紋之壓電材料運用趙氏方法二於不同項數 時之比較圖………………………………………………120 圖4-7 無窮域含裂紋之壓電材料運用趙氏方法二於不同項數 時之短時間比較圖………………………………………121 圖4-8 無窮域含裂紋之壓電材料運用Durbin方法於 不同時之比較圖………………………………………………………122 圖4-9 無窮域含裂紋之壓電材料運用趙氏方法一於 不同時之比較圖……………………………………………………123 圖4-10 無窮域含裂紋之壓電材料運用趙氏方法二於 不同時之比較圖……………………………………………………124 圖4-11 無窮域含裂紋之壓電材料運用不同數值法之長時間數值解比較圖…………………………………………………………125 圖4-12 無窮域含裂紋之壓電材料運用Durbin方法於不同電位移負載大小之比較圖……………………………………126 圖4-13無窮域含裂紋之壓電材料運用趙氏方法一於不同電位移負載大小之比較圖……………………………………127 圖4-14無窮域含裂紋之壓電材料運用趙氏方法二於不同電位移負載大小之比較圖……………………………………128 圖4-15無窮域含裂紋之壓電材料運用三種數值法之比較……129 圖4-16 Chen and Karihaloo(1999)之結果圖………………………130 圖4-17無窮域含裂紋之壓電材料受之電位移強度因子關係圖 ……………………………………………………………131 圖4-18第一種負載函數之圖形……………………………………132 圖4-19無窮域含裂紋之壓電材料之三種數值法比較圖………133 圖4-20第二種負載函數之圖形……………………………………134 圖4-21 無窮域含裂紋之壓電材料受運用Durbin方法於不同加 載上升時間之比較圖…………………………………135 圖4-22無窮域含裂紋之壓電材料受運用趙氏方法一於不同加載上升時間之比較圖……………………………………136 圖4-23無窮域含裂紋之壓電材料運用趙氏方法二於不同加載上升時間之比較圖………………………………………137 |
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