A Simulation of Metal Forming Process by Three Dimensional Finite Element Model

建立三維有限元素模式進行金屬軋延製程分析

申冀治(Chi-Chih Shen)

《工業科技與管理學刊》 2卷 (2008/03) Pp. 29-40

https://doi.org/10.6604/JITM.2008.2.2

摘要

本研究的目的在建立一考慮溫度效應的大變形偶合熱彈塑有限元素理論模式，可同時解出元素的變形及溫度，並進而以該理論模式建立金屬軋廷成形的數值模擬分析模式，可處理金屬在軋延成形過程所產生的高溫和大應變之大變形問題以正確模擬軋廷成形過程及獲得相關數據。

關鍵字

溫度效應 ； 偶合 ； 熱彈塑 ； 有限元素

並列摘要

This paper has developed a finite element model that is to establish a heat transfer finite element model and a three dimensional large deformation thermal-elastic-plastic finite element model, which is then coupled to form a complete theoretical model including heat transfer. A three dimensional numerical simulation model of metal rolling formation is developed from the theoretical model. In this theoretical model, the two variables of element deformation and temperature variation are placed in a variable matrix. The thermal elastic plastic rigid matrix and heat transfer rigid matrix are placed in the same expansion rigid matrix. Furthermore, the numerical simulation analytical model developed in this paper was used to simulate aluminum strip rolling. Simulation of the rolling process of aluminum strips in cold rolling and hot rolling under different reductions of the strip were conducted to obtain the effects of different reductions of the strip on rolling, and obtain related data for the reference for practical rolling process. The numerical simulation results were then compared with the experimental data reported by AL-Salehi et al. (1973). The results of comparison prove that the theoretical model and numerical analytical model established in this paper possess considerable reliability.

並列關鍵字

finite element ； thermal-elastic-plastic ； heat transfer ； metal Forming ； rigid matrix