臺灣博碩士論文加值系統

　　本文使用彈塑性模式之有限元素法來解決金屬在行星式三輥輸高縮
減軋延機(3-roll Planetary High Reduction Mill)軋延製程下之應
力應變分析。文中先建立了一個三維(3-Dimension)的軸向壓縮金屬圓
柱之有限元素模型，並將其由MARC有限元素分析軟體計算出的結果和
已發表的論文作比較，以驗證MARC軟體在此類彈塑性大變形問題上的
適用性。進而再建立軋延材之三維有限元素法圓柱模型，並藉MARC之
輔助，模擬行星式三輥輸高縮減軋延機之軋延過程。經由數值模擬，探
討軋延材經行星式三輥輸高縮減軋延機軋延後之形狀變化，材料流動
情形和軋延材之應力應變分佈等。並藉由增量疊代法的運用，持續軋
延模擬的進行，求取穩定狀態下的軋延負載。

　　The purpose of this study is to analyze metal rolled under 3-roll planetary high reduction mill (HRM) by means of the finite element method with an elastic-plastic model. With finite element software package MARC, this study created a fully three-dimensional model of the rolling process of HRM. To verify the applicability of MARC to the rolling process of HRM, the results of a cylindrical block upsetting problem computed by MARC were compared with other relevant research. After numerical simulation, a deformation and a stress-strain distribution of the rolled metal were discussed. Besides, by using the incremental iterative procedure, the bearing forces of roller in the steady state were calculated.