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研究生:阮柏豪
研究生(外文):Po-Hao Juan
論文名稱:潛變理論應用於彈-黏-塑車轍模型之研究與探討
指導教授:郭振銘
指導教授(外文):Chen-Ming Kuo
學位類別:碩士
校院名稱:國立成功大學
系所名稱:土木工程學系碩博士班
學門:工程學門
學類:土木工程學類
論文種類:學術論文
論文出版年:2004
畢業學年度:92
語文別:中文
論文頁數:57
中文關鍵詞:有限元素車轍潛變瀝青
外文關鍵詞:FEMruttingcreepasphalt
相關次數:
  • 被引用被引用:6
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  • 下載下載:42
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  瀝青混凝土由荷重引起的材料變形是由彈性、塑性、黏彈性和黏塑性等四個分量組成,材料行為甚為複雜,而其中塑性和黏塑性分量所結合的性質,是導致瀝青材料產生永久變形之原因,亦即車轍破壞的主要來源。因此,完整的考慮瀝青材料之彈性、塑性、黏彈性和黏塑性行為,才能對車轍值做適當的預測。本研究中,利用有限元素程式建立單層瀝青鋪面,以潛變理論為基礎,採用時間硬化律和應變硬化律來模擬彈-黏-塑材料模式中的黏塑性分量,將一次移動載重行經鋪面後所求得之永久應變值,以冪次方永久變形模式計算出N 次重覆載重後的永久變形量,並將之與實際量測的車轍深度做比對。由預測結果顯示,以應變硬化律分析所得的車轍預測值明顯較採用時間硬化律分析時之效果佳,約可減少9.3%之誤差。最後,從兩種不同潛變理論的角度來探討時間硬化律與應變硬化律應用於彈-黏-塑材料模式時,對車轍分析結果所造成之影響。
  The strain is comprised by four components, elasticity, plasticity, viscoelasticity, and viscoplasticity. Plasticity and viscoplasticity are the reasons for the permanent deformation of asphalt concrete, normally called rutting.

  The formation of rutting is still uncertain because of the complicated material behaviors of asphalt concrete and the loading conditions. In order to accurately predict rutting, a single-layer elasto-visco-plastic rutting model which is established. The viscoplastic behavior of the material in the model is based on the creep law. The time hardening law and the strain hardening law are both adopted to simulate the viscoplastic characteristics of asphalt. A trapezoid-shaped load amplitude was applied in the FEM analysis. The power law equation of permanent deformation is used to predict rutting after N loading repetitions.

  The results show that the predicted rutting with strain hardening law are more accurate than those with time hardening law. At last, discuess the influence on the result of the rutting analysis when the two different creep laws, time hardening law and strain hardening law, apply on the elasto-visco-plastic rutting model.
摘要 I
Abstract II
誌謝 III
目錄 IV
表目錄 VI
圖目錄 VII

第一章緒論 1
1-1 前言 1
1-2 研究動機 1
1-3 研究目的 2
1-4 研究範圍與方法 3
1-5 論文架構 3

第二章文獻回顧 6
2-1 瀝青混凝土的材料模式 6
2-1-1 麥斯威爾模式(Maxwell Model) 7
2-1-2 凱文模式(Kelvin Model) 8
2-1-3 柏格模式(Burgers Model) 9
2-1-4 冪次方模式(Power Law Model) 10
2-1-5 彈-黏-塑模式(Elasto-Visco-Plastic Model) 10
2-2 瀝青混凝土永久變形(車轍)預測模式 12
2-2-1 Shell 法 14
2-2-2 VESYS 法 14
2-3 鋪面分析方法 17
2-3-1 解析解 17
2-3-2 有限元素法 19

第三章潛變理論介紹 21
3-1 潛變現象 21
3-2 適合描述潛變行為的關係式 23
3-3 時間硬化率與應變硬化率 25
3-4 ABAQUS 潛變模型之特色 27

第四章模型材料行為之驗證 28
4-1 三維三層彈性模型之驗證 28
4-2 潛變材料行為之驗證 33

第五章潛變理論應用於瀝青鋪面車轍分析 39
5-1 瀝青混凝土彈-黏-塑材料模式 40
5-2 車轍試驗之假設條件與決定材料參數之方式 43
5-3 移動載重於彈-黏-塑材料模式之鋪面車轍預測 44

第六章結論與建議 52
6-1 結論 52
6-2 建議 53

參考文獻 54

自述 57
ABAQUS/Standard User’s Manual Version 6.4

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