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利用ANSYS/LS-DYNA有限元分析软件,建立了平轧辊系一体化的三维弹塑性有限元模型;利用小型重启动方法对水平辊多道次连续可逆轧制过程进行了模拟计算,分析了不同轧制规程下轧制出相同厚度中间坯的宽展变化以及不同规格的带钢轧制出不同厚度中间坯的宽展变化.不同轧制规程的模拟结果表明,轧制规程对中间坯的宽度变化关系不大,但是不同的轧制规程消耗的能量不同,所产生的轧制力和轧制力矩也不同.利用小型重启动既可以保证轧制过程的连续性,又可避免模型更新法重复建模的复杂性.
The finite element analysis software ANSYS / LS-DYNA was used to establish a three-dimensional elasto-plastic finite element model of an integrated flat roller system. The multi-pass horizontal reversing rolling process was simulated by using a small weight restarting method. Rolling process under the rolling of the same thickness of the blank in the middle of the widening changes and different specifications of the strip rolling of different thickness of the middle of the billet widening changes.The simulation results of different rolling rules show that the rolling rules on the billet width However, the energy consumed by different rolling rules is different, and the rolling force and rolling torque are also different.Using small restart can not only ensure the continuity of the rolling process, but also avoid repeating the model updating method The complexity of modeling.