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研究生: 趙振伯
Jen-Bo Jau
論文名稱: 以增量式內涵塑性理論分析材料受軸向循環負載之塑性行為
指導教授: 葉維磬
W.C. Yeh
口試委員:
學位類別: 碩士
Master
系所名稱: 工學院 - 機械工程學系
Department of Mechanical Engineering
畢業學年度: 90
語文別: 中文
論文頁數: 72
中文關鍵詞: 內涵材料函數
外文關鍵詞: material function, Endochronic
相關次數: 點閱:6下載:0
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  • 摘 要
    本文採用增量式內涵時間塑性理論為架構,並以一組有限指數遞減函數為核心函數,提出新的材料函數 以期對材料在受到循環負載下的塑性行為有更好的預測性,此循環塑性行為包括包辛格效應、循環硬化及飽和穩態等行為。
    理論和實驗的比較結果顯示,藉由修正材料函數,內涵時間塑性理論可以很合理且完整的描述及預測材料受單軸循環負載下之受力行為。此外,本文所提出的材料函數,對於實驗所觀察到的記憶消除效應亦可做合理的描述。


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    目 錄 頁次 摘要 Ⅰ 目錄 Ⅱ 圖表說明 Ⅳ 符號說明 Ⅷ 第一章 緒論 1-1 前言 1 1-2 文獻回顧 2 1-3 研究動機與方法 6 第二章 增量式內涵塑性理論 2-1 引言 7 2-2 內涵組成方程式 8 2-3 增量式內涵組成方程式 10 2-4 材料函數 13 2-4-1 包辛格效應(Bauschinger Effect) 16 2-4-2 函數c 16 2-4-3 記憶消除(Erasure of Memory) 18 第三章 數值計算 3-1 計算流程 20 3-2 應力值的計算 22 第四章 結果與討論 4-1 實驗負載路徑 26 4-2 結果與討論 27 4-2-1 軸向等振幅循環 28 4-2-2 軸向非對稱等振幅循環 28 4-2-3 軸向漸增振幅循環 29 4-2-4 軸向漸變均值循環 30 4-2-5 軸向漸增振幅及漸變均值循環 31 第五章 結論與建議 5-1 結論 33 5-2 建議 34 附錄一 66 參考文獻 68

    參考文獻
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