研究生: |
王丞緯 Chen-Wei Wang |
---|---|
論文名稱: |
應變有限元素法理論推導與驗證 The derivation and verification for the strain finite element method |
指導教授: |
潘誠平
Chan-Ping Pan |
口試委員: |
蔡幸致
Hsing-Chih Tsai 林昌佑 Chang-Yu Lin |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 營建工程系 Department of Civil and Construction Engineering |
論文出版年: | 2018 |
畢業學年度: | 106 |
語文別: | 中文 |
論文頁數: | 114 |
中文關鍵詞: | 假設應變場 、有限元素法 、最小總勢能法 、積分位移場 、數值積分 |
外文關鍵詞: | assumed strain field, Finite Element Method, Minimum total potential energy, Numerical integration, Integration for displacement field |
相關次數: | 點閱:175 下載:1 |
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有別於傳統有限元素法,本文以假設應變場進行有限元素分析,解決傳統有限元素法會偏硬的問題,此為全新的方法。應變有限元素法在解一維簡支梁與懸臂梁問題中發現:(1)應變場可假設簡單的線性函數、(2)由於積分特性使得位移場收斂較應變場快、(3)應變場滿足諧和條件,不會有偏硬現象。
驗證在求解二維平面應力問題時所使用的數值積分表以及變分計算最小總勢能定理使否可行,並找出取代數值積分法的求解作法。
A new structural analysis method was developed in this study. This method uses the assumed strains as the basic unknowns. The results obtained from the one-dimensional beam problems show: (1) the assumed strain function can be a relatively simple function, like the linear function. (2) the displacement field obtained from the integration of the strain field will converge even faster than the basic unknown strains; (3) the results show a softer response than traditional finite element method.
When I trying to solve the two-dimensional plane problem, the results are not satisfactory currently. Therefore, I trying to verification the interpolation function integral table and the vibrational calculation to calculate the minimum total potential energy in solving the plane problem, and find the method of doing the interpolation function to replacement numerical integration.
【1】王新榮. 有限元素法及其應用. 中央圖書出版社, 1997.
【2】LIU, Gui-Rong; TRUNG, Nguyen Thoi. Smoothed finite element methods. CRC press, 2016.
【3】AKIN, John Edward. Finite element analysis with error estimators: An introduction to the FEM and adaptive error analysis for engineering students. Elsevier, 2005.
【4】陳建銘,「假設應變場的結構分析」,國立台灣科技大學營建工程研究所碩士論文,潘誠平指導