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使用三維數位影像相關係數法建立成形極限圖之研究 = Applicatio...

國立高雄大學土木與環境工程學系碩士班

使用三維數位影像相關係數法建立成形極限圖之研究 = Application of 3D Digital Image Correlation Method to establish Forming Limit Diagram

紀錄類型:	書目-語言資料,印刷品 : 單行本
並列題名:	Application of 3D Digital Image Correlation Method to establish Forming Limit Diagram
作者:	王茂恭,
其他團體作者:	國立高雄大學
出版地:	[高雄市]
出版者:	撰者;
出版年:	2009[民98]
面頁冊數:	117面圖、表 : 30公分;
標題:	三維數位影像相關係數法
標題:	3D Digital Image Correlation method
電子資源:	http://handle.ncl.edu.tw/11296/ndltd/14847509653714436145
附註:	指導教授：童士恒
附註:	參考書目：面
摘要註:	成形極限圖可透過成形極限試驗獲得，在成形極限試驗中通常使用網格分析法來進行實驗結果之量測，然網格分析法在量測精度上仍有改進的空間且施作上較為麻煩；數位影像相關係數法為一非接觸式的量測技術，可提供全域之應變量測，且施作方式簡便。因此本研究針對數位影像相關係數法在成形極限試驗上的應用進行探討。　　本研究以鋁6061-T6試片進行成形極限試驗，以自行發展僅利用單一相機之三維數位影像相關係數法分析試片在試驗中之最大主應變與最小主應變，並依此分析結果建立成形極限圖。　　分析結果顯示，三維數位影像相關係數法可以成功量測出破壞模式為破裂破壞之試片的應變分布。在試片的製備與實驗結果的分析上發現到，三維數位影像相關係數法相較於網格分析法有較為便利的好處。與網格分析法之結果相較，可發現最大主應變之大小相當接近，而最小主應變之大小則有相當差異，造成差異的主要原因是所量測的試片所處的加載狀態並不相同之故。　　另外由數值模擬分析的結果可發現數值模擬所得之最大與最小主應變與網格法與數位影像相關係數法量測所得之結果並不相同，可能是材料性質有所差異之故，然其分析所得之應變路徑與數位影像相關係數法量測所得之趨勢非常接近，此應變路徑無法使用網格法求得，顯示三維數位影像相關係數法應用於成形極限試驗具有不錯的發展潛能。　　This study explored the application of 3D-Digital Image Correlation（3D-DIC） method to establish Forming Limit Diagram（FLD）. FLD can be established by ball punch deformation test. Grid method is usually used to measure the strain in this test. However, the precision of this method is not good enough and its process is complicated. DIC method is a non-contact measurement technique. It provides accurate measurements of the full field strain distribution, and the process of this method is simple. In this study, the 3D-DIC method, in which only one camera is used, is applied in the ball punch deformation test and the advantage and disadvantage of this method and the grid method are compared.　　According to the result of the experiments, 3D-DIC method can measure the major strain and the minor strain successfully in the ball punch deformation test. Moreover, the 3D-DIC method is easier and more accurate than grid test.　　A numerical simulation is also carried out in this research. The major and minor strains obtained from the simulation are different from that measured by DIC and grid method. But the tendency of the strain path is very similar to that from DIC. And this strain path can not be measured by the grid method. As a result, the 3D-DIC method has a great potential in the ball punch deformation test.

使用三維數位影像相關係數法建立成形極限圖之研究 = Application of 3D Digital Image Correlation Method to establish Forming Limit Diagram
王, 茂恭

使用三維數位影像相關係數法建立成形極限圖之研究 = Application of 3D Digital Image Correlation Method to establish Forming Limit Diagram / 王茂恭撰 - [高雄市] : 撰者, 2009[民98]. - 117面 ; 圖、表 ; 30公分.
指導教授：童士恒參考書目：面.
三維數位影像相關係數法3D Digital Image Correlation method

使用三維數位影像相關係數法建立成形極限圖之研究 = Application of 3D Digital Image Correlation Method to establish Forming Limit Diagram
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