應用三維有限元素法於厚板輥軋之寬展率分析

Lateral Spread Analysis in Thick Plate Rolling by 3-D Finite Element Method

10.6989/JN.200812.0065

張志毅(Chih-Yi Chang)

輥軋 ； 厚板 ； 寬展率 ； 三維有限元素法 ； rolling ； thick plate ； lateral spread rate ； 3-D finite element method

南亞學報

28期（2008 / 12 / 01）

65 - 76

繁體中文

厚板輥軋過程中寬度的變化率遠高於薄板，其寬展量不可忽略，因此無法以二維有限元素法模擬輥軋過程，分析困難度遠高於薄板輥軋，本文使用三維有限元素輥軋模型進行輥軋分析，考慮不同平板寬厚比、軋輥摩擦係數、軋輥直徑以及平板厚度裁減率等各種條件對平板寬展率的影響，同時討論軋延力與軋延力矩的變化，數值分析與文獻中輥軋實驗獲得相當一致的結果，證實本研究所使用的三維有限元素輥軋模型確實可以模擬真實輥軋製程，精確預測不同輥軋條件下所獲得的平板尺寸。

The lateral spread rate of thick plate is larger than thin plate during the rolling process. The 2-D finite element method can't be used to simulate the thick plate rolling because the spread in width is not negligible. By using the 3-D finite element method, this study analyzes the thick plate rolling with some conditions including width-to-thickness ratio, interface friction, roll diameter and thickness reduce rate. The numerical results of lateral spread as well as roll force and torque are computed and excellent agreements with existing experimental solutions are obtained.