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姓名 詹台安(Tai-An Chan)  查詢紙本館藏   畢業系所 機械工程學系
論文名稱 預裂負荷對破壞韌性影響之數值模擬
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摘要(中) 本文採用ABAQUS有限元素分析軟體,預測材料在不同的預裂負荷條件下,對於破壞韌性量測值之影響。首先對於所使用的分析軟體程式作一個驗證,考量模擬時的結果精確性,及其收斂行為,並配合以發表的文獻,證明此分析程式可適用於裂縫尖端應力分析模擬。在模擬過程中,選擇中間裂縫試片作為模擬的對象,模擬分析中,改變預裂負荷的大小(M值)及預裂的次數,來探討材料的應變硬化,殘留應力及塑性域變化之情形,從所得到的對應關係中,可判斷出預裂負荷條件改變相對材料破壞韌性之影響。藉著分析軟體的資料擷取功能,可在循環預裂負荷過程中,得到每個階段的物理量數據變化,從這些物理量的比較當中,可發現材料應變硬化、殘留應力與塑性域三者的關係,及之間的物理機制變化。在本文最後的研究結果當中,得證了有限元素分析結果的精確性,可真實模擬出實際受力情形。材料的應變硬化與殘留應力皆會隨著預裂負荷M值的遞增而有增加,而材料應變硬化值會隨著預裂次數增加而減少,在材料殘留應力方面,M值較小時,其受預裂次數改變之影響相當小,在M值較大時,其受預裂次數改變之影響則較為明顯,至於塑性域,則會隨著M值的增加而擴大,並導致材料的應變硬化量增加,並且證明應變硬化與殘留應力是造成破壞韌性量測誤差之主因。
關鍵字(中) ★ 數值模擬
★ 破壞韌性
關鍵字(英) ★ numerical analysis
★ fracture toughness
論文目次 摘 要 ----------------------------------------I
誌 謝 ----------------------------------------II
總目錄 ----------------------------------------III
圖目錄 ----------------------------------------V
表目錄 ----------------------------------------VIII
符號說明 ----------------------------------------IX
第一章 緒 論-------------------------------------1
第二章 文獻回顧----------------------------------4
2-1國內相關文獻----------------------------------4
2-2國外相關文獻----------------------------------4
2-2-1線彈性裂縫成長分析--------------------------4
2-2-2彈塑性裂縫成長分析--------------------------5
第三章 理論說明----------------------------------7
3-1靜荷重下的材料強度理論------------------------7
3-1-1應變硬化------------------------------------7
3-1-2 Griffith的破壞模型-------------------------8
3-1-3 裂縫材料的破壞強度-------------------------10
3-2裂縫前端的應力場------------------------------12
3-2-1線性破壞力學--------------------------------12
3-2-2小規模降伏----------------------------------17
3-2-3彈塑性破壞力學與J積分-----------------------19
3-2-4疲勞裂縫進展速度----------------------------22
3-3破壞韌性--------------------------------------24
3-3-1平面應變破壞韌性KIC-------------------------24
3-3-2影響破壞韌性KIC的因素-----------------------28
3-3-3破壞韌性JIC---------------------------------29
第四章 數值模擬方法------------------------------31
4-1裂縫成長的有限元素解析------------------------31
4-1-1特殊裂縫尖端元素----------------------------31
4-1-2裂縫成長模型--------------------------------35
4-1-3破壞參數之計算------------------------------36
4-2 試片規格-------------------------------------37
4-3 有限元素法模擬步驟---------------------------37
4-3-1網格建立------------------------------------38
4-3-2裂縫成長------------------------------------38
4-3-3預裂負荷模擬--------------------------------39
第五章 結果與討論--------------------------------41
5-1 分析程式之驗證-------------------------------41
5-2 預裂負荷對應變硬化及殘留應力之影響-----------42
5-3預裂次數(裂縫增量)對應變硬化及殘留應力之影響--43
5-4 預裂負荷中殘留應力補償機制之驗證-------------44
5-5 預裂負荷對塑性域之影響-----------------------45
5-6 von Mises等效應力----------------------------46
5-7 預裂負荷對破壞韌性之影響---------------------47
第六章 結論與未來方向----------------------------49
6-1結論------------------------------------------49
6-2未來方向--------------------------------------50
參考文獻-----------------------------------------91
參考文獻 1.A. Saxena, P. K. Liaw, and W. A. Logsdon, "Residual Life Prediction and Retirement for Cause Criteria for SSTG Casings -Ⅱ. Fracture Mechanics Analysis," Engineering Fracture Mechanics, Vol. 25, No. 3, pp.289-303, 1986.
2.P. K. Liaw, A. Saxena and J. Schaefer, "Estimating Remaining Life of Elevated-Temperature Steam Pipes-Part Ⅱ. Fracture Mechanics Analysis," Engineering Fracture Mechanics, Vol. 32, No. 5, pp. 709-722, 1989.
3.V. E. Saouma and I. J. Zatz, "An Automated Finite Element Procedure for Fatigue Cracks Propagation Analysis," Engineering Fracture Mechanics, Vol. 20, No. 2, pp.321-333, 1984.
4.P. G. Bergan and B. Aamodt, "Finite Element Analysis of Crack Propagation in Three-Dimensional Solid under Cyclic Loading," Nuclear Engineering and Design, Vol. 29, pp.180-188, 1974.
5.J. P. Gallagher, "The Role of Crack Growth Life Prediction in Aircraft," Material Science and Engineering, Vol. A103, pp.29-36, 1988.
6.A. A. Griffith, "The Phenomena of Rupture and Flow in Solids Philosophical," Transactions of the Royal, Society of London, Vol. A221, pp.163-197, 1921.
7.G. R. Irwin, "Analysis of Stresses and Strains near the End of a Crack Travrsing a Plate," Transaction of the ASME, Journal of Applied Mechanics, Vol. 24, pp.361-364, 1957.
8.翁炯立,周山林,康哲誠,"高溫水泵軸(套)承受週期性熱震盪載荷之疲勞破裂有限元素分析",台電核能月刊,86年5月。
9.許伯秋,張力,宋佩瑄,"裂縫閉合行為之數值模擬",中正嶺學報,第二十四卷,第一期,民國84年7月。
10.郭榮卿等,"反應爐壓力槽鋼材疲勞行為偵測與評估,期末報告",台灣電力股份有限公司研究報告,民國90年。
11.F. Erdogan and G. C. Sih, "On the Crack Extension in Plates under Plane Loading and Transverse Shear," Transaction of the ASME, Journal of Basic Engineering, Vol. 85, No. 4, pp.519-527, 1963.
12.S. Ostlund and P. Gudmundson, "The Application of Moving Finite Elements for the Study of Crack Propagation in Linear Elastic Solids, " Computers and Structures, Vol. 25, No. 5, pp. 765-774, 1987.
13.J. Padovan and Y. H. Guo, "Moving Template Analysis of Crack Growth–1. Procedure Development," Engineering Fracture Mechanics, Vol. 48, No. 3, pp.405-425, 1994.
14.R. S. Barsoum, "Triangular Quarter Point as Elastic and Perfectly Plastic Crack Tip Elements," International Journal for Numerical Methods in Engineering, Vol. 11, pp.85-98, 1977.
15.G. S. Sih, "Strain-Energy-Density Factor Applied to Mixed Mode Crack Problems," International Journal of Fracture, Vol. 10, pp.305-321, 1974.
16.X. B. Lin and R. A. Smith, "Finite Element Modeling of Fatigue Crack Growth of Surface Cracked Plates," Engineering Fracture Mechanics, Vol. 63, pp.503-522, 1999.
17.J. C. Newman, Jr., "A Finite Element Analysis of Fatigue Crack Closure," Mechanics of Crack Growth, ASTM STP 490, American Society for Testing and Materials, pp.281-301, 1976.
18.K. Ohji, K. Ogura, and Y. Ohkubo, "Cyclic Analysis of a Propagating Crack and Its Correlation with Fatigue Crack Growth," Engineering Fracture Mechanics, Vol. 7, pp.457-464, 1975.
19.J. C. Newman, Jr., "A Finite Element Analysis of Crack Growth under Monotonic and Cyclic Loading," ASTM STP 637, pp.56-80, 1977.
20.S. Wastberg, "A Finite Element Analysis of a Crack Growing under Cyclic Loading," Fatigue & Fracture of Engineering Materials & Structures, Vol. 6, No. 2, pp.149-158, 1983.
21.N. A. Fleck, "Finite Element Analysis of Plasticity-Induced Crack Closure under Plane Strain Conditions," Engineering Fracture Mechanics, Vol. 25, No. 4, pp.441-449, 1986.
22.R. C. McClung and H. Sehitolgu, "On the Finite Element Analysis of Fatigue Crack Closure – 1. Basic Modeling Issues," Engineering Fracture Mechanics, Vol. 33, No. 2, pp.237-252, 1989.
23.R. C. McClung and H. Sehitolgu, "On the Finite Element Analysis of Fatigue Crack Closure – 2. Numerical Results," Engineering Fracture Mechanics, Vol. 33, No. 2, pp.253-272, 1989.
24.J. C. Newman, Jr., C. A. Bigelow, and K. N. Shivakumar, "Three-Dimensional Elastic-Plastic Finite Element Analysis of Constraint Variation in Cracked Bodies," Engineering Fracture Mechanics, Vol. 46, No. 1, pp.1-13, 1993.
25.耿陽 譯著, "延性破壞力學," 復漢出版社印行, pp.18-30, 1984.
26.劉松柏 譯著, "Strength and Fracture of Materials," 成璟文化技術叢書, pp.12-62, 2000.
27.D. M. Parks, "The Virtual Crack Extension Method for Non-Linear Material Behavior," Computation Methods in Applied Mechanics and Engineering, Vol. 12, pp.353-64, 1977.
28.C. F. Shin, B. Moran, and T. Nakamura, "Energy-Release Rate Along a Three-Dimensional Crack Front in a Thermally Stressed Body," International Journal of Fracture, Vol. 30, pp.79-102, 1986.
29.D. W. Heoppnre and W. E. Krupp, "Predication of Component Life by Application of Fatigue Crack Growth Knowledge," Engineering Fracture Mechanics, Vol. 6, p.47, 1974.
30.J. W. Barsom, "Fatigue Crack Propagation in Steels of Various Industrial," Series B, No. 4, p.1190, 1971.
31.R. G. Forman, and V. E. Kearney, and R. M. Engle, "Numerical Analysis of Crack Propagation in Cyclic-Loaded Structures," Transaction ASME, Journal of Basic Engineering, Vol. 89, No. 3, p.459, 1976.
32.P. Paris and F. Erdogan, "A Critical Analysis of Crack Propagation Laws," Transaction of the ASME, Journal of Basic Engineering, Vol. 85, No. 4, pp.528-534, 1963.
33.G. Steinmueller, "Restrictions in the Application of Automatic Mesh Generation Schemes by Isoparametric Coordinates," International Journal for Numerical Methods in Engineering, Vol. 8, pp.289-294, 1974.
34.O. C. Zienkiewicz, "The Finite Element in Engineering Science," McGraw-Hill, London, 1977.
35.W. E. Anderson, "An Engineer View Brittle Fracture History," Boeing report, 1969.
36.M. Nakagaki and S. N. Atluri, "Elastic-Plastic Analysis of Fatigue Crack Closure in Modes I and II," AIAA Journal, Vol. 18, pp.1110-1117, 1980.
37.賴耿陽 譯著, "延性破壞力學," 復漢出版社印行, pp.104-121, 1984.
38.H. S. Chen and J. L. Doong, "Influence of Precracking Load on Critical Stress Intensity Factor of Mild Steel," Journal of Materials, Vol. 18, pp.2305-2310, 1983.
指導教授 鄭銘章(Ming-jang Jeng) 審核日期 2004-6-5
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