簡易檢索 / 詳目顯示
| 研究生： |
李兆峯 Lee, Jhao-Feng |
|---|---|
| 論文名稱： |
鋼管銲接接頭應力強度因子之研究 Numerical Analyses for the Stress Intensity Factors of Some Welded Steel Pipe Joints |
| 指導教授： |
鍾興陽
Chung, Xing-Ynag |
| 學位類別： |
碩士 Master |
| 系所名稱： |
工學院 - 土木工程學系 Department of Civil Engineering |
| 論文出版年： | 2011 |
| 畢業學年度： | 99 |
| 語文別： | 中文 |
| 論文頁數： | 147 |
| 中文關鍵詞： | 鋼管銲接接頭 、應力強度因子 、裂縫張開位移 、最小二乘法 、迴歸分析 、軸對稱有限元素模型 |
| 外文關鍵詞： | Welded Steel Pipe Joint, Stress Intensity Factor, Crack Opening Displacement, Least-Squares Method, Regression Analysis, Axisymmetric Finite Element Model |
| 相關次數： | 點閱：118 下載：2 |
| 分享至: |
| 查詢本校圖書館目錄 查詢臺灣博碩士論文知識加值系統 勘誤回報 |
本研究在未考慮鋼管壁與鋼管壁之間接觸問題的基本假設下，使用兩種數值方法求取三種常見鋼管銲接接頭（即：對接接頭、搭接接頭以及套管接頭）之裂縫尖端之應力強度因子KI以及KII，並透過大量數值分析之結果求取各種接頭應力強度因子的迴歸公式。第一種方法主要利用有限元素程式模擬直接求取應力強度因子，第二種方法則是利用有限元素程式模擬取得裂縫張開位移再配合最小二乘法來計算應力強度因子，本研究比較兩種方法所求得之應力強度因子，並討論確認最小二乘法求取鋼管銲接接頭應力強度因子之適用性，此外，本研究亦將透過有系統的數值分析結果，探討三種常見鋼管銲接接頭在各種幾何形狀參數變化下應力強度因子的變化情形，所求得三種常見鋼管銲接接頭的應力強度因子的迴歸公式，透過與有限元素數值結果的比較，證明其有良好的準確性。最小二乘法用於計算鋼管銲接接頭應力強度因子亦有良好之適用性。
Under the basic assumption of not considering the contact problem between pipe walls, this study utilized two numerical methods to compute the stress intensity factors (SIFs) KI and KII of the crack tips of three common welded steel pipe joints (i.e., butt joint, lap joint and sleeve joint), and developed the stress intensity factor (SIF) regression formulae of the three joints through large amounts of numerical analysis results. The first method employed finite-element program to obtain SIFs directly. The second method utilized finite-element program to simulate crack opening displacements (CODs) and then computed SIFs using the Least-Squares Method. The SIF results of the two methods were compared in this study to verify the feasibility of using the Least-Squares Method to acquire the SIFs of welded steel pipe joints. Furthermore, this study investigated the SIF variations corresponding to the variations of various geometric parameters. The precision of the derived SIF regression formulae for the three welded steel pipe joints is verified by the comparisons with the finite-element results. The Least-Squares Method also has good applicability for computing the SIFs of welded steel pipe joints.
ABAQUS HTML Documentation, “User's Manual,” Dassault Systèmes Simulia Corp., Providence, RI, USA.
AWS D1.1/D1.1M:2004, “Structural Welding Code—Steel,” American National Standards Institute, (2003)
Ayatollahi M.R. and Khoramishad H., “Stress Intensity Factors for an Axially Oriented Internal Crack Embedded in a Buried pipe,” International Journal of Pressure Vessels and Piping; Vol. 87, Issue 4, pp. 165-169, (2010)
Barsoum R.S., “On the Use of Isoparametric Finite Elements in Linear Fracture Mechanics,” International Journal for Numerical Methods in Engineering; Vol. 10, Issue 1, pp. 25-37, (1976)
Chung H.Y., Liu S.H., Lin R.S. and Ju S.H., “Assessment of Stress Intensity Factors for Load-Carrying Fillet Welded Cruciform Joints Using a Digital Camera,” International Journal of Fatigue; Vol. 30, Issue 10-11, pp. 1861-1872, (2008)
Gunay D., Aydemir A. and Ozer H., “Torsional Stresses in the Transverse Fillet Weld Tubular Joints,” Mathematical & Computational Applications, Vol. 1, No. 1, pp. 29-35, (1996)
Henshell R.D. and Shaw K.G., “Crack Tip Finite Elements are Unnecessary,” International Journal for Numerical Methods in Engineering; Vol. 9, Issue 3, pp. 495-507, (1975)
Irwin G.R., “Analysis of Stresses and Strains Near The End of A Crack Traveling A Plate,” Transaction of ASME, Journal of Applied Mechanics; Vol. 24, No. 3, pp. 361-364, (1957)
Jang G.B., Kim H.K. and Kang S.S., “The Effects of Root Opening on Mechanical Properties, Deformation and Residual Stress of Weldment,” Welding Research Supplement; 80s-88s, (2001)
Ju S.H., “Simulating Stress Intensity Factors for Anisotropic Materials by the Least Squares Method,” International Journal of Fracture; Vol. 81, No. 3, pp. 283-297, (1996)
Ju S.H., “Simulating Three-Dimensional Stress Intensity Factors by the Least-Squares Method,” International Journal for Numerical Method in Engineering; Vol. 43, Issue 8, pp. 1437-1451, (1998)
Rice J.R., “A Path Independent Integral and the Approximate Analysis of Strain Concentration by Notches and Cracks,” Journal of Applied Mechanics; Vol. 35, No. 2, pp. 379-386, (1968)
Shih C.F. and Asaro R.J., “Elastic-Plastic Analysis of Cracks on Bimaterial Interfaces: Part I—Small Scale Yielding,” Journal of Applied Mechanics; Vol. 55, Issue 2, pp. 299-316, (1988)
Shih C.F., Moran B. and Nakamura T., “Energy Release Rate along a Three-Dimensional Crack Front in a Thermally Stressed Body,” International Journal of Fracture; Vol. 30, No. 2, pp. 79-102, (1986)
Wallbrink C.D., Peng D. and Jones R., “Assessment of Partly Circumferential Cracks in Pipes,” International Journal of Fracture, Vol. 133, Issue 2, pp. 167–181, (2005)
內政部營建署，「鋼結構容許應力設計法規範及解說」，民國九十六年六月
行政院勞工委員會勞工安全衛生研究，「鋼管施工架國家標準妥適性研究」，民國九十八年三月
呂其和，「楔形體填充物之有限元素分析」，國立成功大學土木工程系，碩士學位論文（2004）
林坤震，「不同寬厚度對接鋼板接頭應力強度因子之研究」，國立成功大學土木工程系，碩士學位論文（2008）
林奕佐，「鋼構填角銲搭接接頭應力強度因子之研究」，國立成功大學土木工程系，碩士學位論文（2007）
林容暄，「承拉型填角銲十字接頭應力強度因子之量測與數值分析」，國立成功大學土木工程系，碩士學位論文（2007）
陳奎澧，「SA533B1壓力槽鋼材之疲勞裂縫閉合與裂縫成長研究」，國立中央大學機械工程系，碩士學位論文（2001）
黃千豪，「三維圓管裂縫有限元素模型之自動建立與應用研究」，國立中興大學應用數學系，碩士學位論文（2006）
張鵬祥，「對接圓管環縫銲接殘留應力之研究」，中正理工學院兵器系統工程研究所，碩士學位論文（1997）
詹台安，「預裂負荷對破壞韌性影響之數值模擬」，國立中央大學機械工程系，碩士學位論文（2004）
盧彥祥，「銲接型鋼筋續接器應力強度因子之數值分析」，國立成功大學土木工程系，碩士學位論文（2010）
校內：2016-08-31公開校外：2021-08-31公開