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应用热力耦合大变形有限元方法,模拟了H型钢的热轧变形过程,给出了轧制力的大小及其分布方式。数值模拟结果表明:H型钢腹板与翼缘外表面单位轧制力的最大值一般均出现在出口截面附近,且前者比后者大得多。此外,模拟计算值与实测值比较接近,从而证明了本模拟计算方法的正确性。

By Thermomechanical Coupled Finite Element Method, the hot rolling processes of H-beam were simulated, and the rolling pressures and their distributions were obtained. The calculated rolling pressures are generally close to the measured data, which verifies the validity of the method. The evaluation of rolling pressures is of great importance to the design of rolling mill and the setting down of rolling schedules. The numerical simulation results showed that the maximum rolling pressures exerted on the web or outer surface of flange occur around the exiting section, and the former is greater than the latter.

参考文献

[1] 林慎也;生田和重;西野治.塑性有限要素法にょるH形ロ-ル芯可变ユニバサル延の解析[M].京都市:日本塑性加工学会,1992:195-198.
[2] 崔振山 .H型钢热轧过程变形和微观组织演变的计算机模拟[D].秦皇岛:燕山大学,1999.
[3] 刘相华.刚塑性有限元及其在轧制中的应用[M].北京:冶金工业出版社,1994
[4] 周纪华;管克智.金属塑性变形阻力[M].北京:机械工业出版社,1989
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