C19400铜板带可逆热轧有限元模型的建立及分析

Establishment and analysis on finite element model for C19400 copper strip in reversible hot rolling

基于企业生产工艺和三维有限元理论,通过DEFORM-3D平台建立了C19400铜板带可逆热轧有限元模型,并根据企业现场实测C19400铜板带轧制力验证了该模型的准确性。利用该模型模拟了前3道次热轧时C19400铜板带等效应变、等效应力、温度场和轧制力的变化情况。结果表明:计算轧制力与企业现场实测数据较为吻合,其中,3个道次的相关系数R分别为0.970,0.996和0.994,平均相对误差AARE分别为5.8%,3.3%和4.1%;等效应变分布较均匀,最大等效应变位于轧辊与轧件接触的棱边处,3个道次分别为0.568,1.283和2.130;最大等效应力位于轧件棱角处和轧辊与轧件接触的轧制区域,且以此区域为中心,等效应力向四周逐渐减小,最大等效应力为88.1 MPa。

Based on the enterprise production process and three-dimensional finite element theory, the finite element model of reversible hot rolling for C19400 copper strip was established by DEFORM-3 D platform, and the accuracy of the model was verified by the on-site measured rolling force of C19400 copper strip. Then, the changes of equivalent strain, equivalent stress, temperature field and rolling force during the first three passes of hot rolling were simulated by the above model. The results show that the calculated rolling force is in good agreement with the measured rolling force, and the correlation coefficients R of the three passes are 0.970, 0.996 and 0.994, respectively. Furthermore, the average relative errors AARE are 5.8%, 3.3% and 4.1% respectively. And the equivalent strain distribution is relatively uniform, and the maximum equivalent strain is at the edge where the roller contacts the rolling piece, and the corresponding data of the three passes are 0.568, 1.283 and 2.13, respectively. Then, the maximum equivalent stress is at the edge of the rolling piece and the rolling zone where the roller is in contact with the rolling piece, and the equivalent strain gradually decreases to the periphery from the center of the zone with the maximum equivalent stress of 88.1 MPa.