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连续等通道转角(CECA)大应变是一种加工工件长度不受限制的可实现连续操作的大应变技术。采用有限元软件Deform-3D对CECA大应变技术进行仿真模拟,重点考察了驱动轮对数(1～6对)对抑制工件打滑、驱动轮扭矩和能耗的影响。结果表明:驱动轮对数是CECA大应变技术的一个关键技术参数。随着驱动轮对数的增加,应变分布更加均匀,打滑现象得到控制,工件到达出口过程中消耗的能量减少,工件离开出口后主驱动轮扭矩占总扭矩百分比减少,扭矩分配更合理。4对驱动轮具有最低的能量消耗,并且应变均匀、打滑现象低,是比较理想的一种驱动方式。
Continuous Equal Channel Angle (CECA) Large strain is a large strain technique that enables continuous operation with unlimited workpiece lengths. The finite element software Deform-3D is used to simulate the CECA large strain technique. The effects of the number of driving wheels (1 ~ 6 pairs) on restraining workpiece slippage, driving wheel torque and energy consumption are investigated emphatically. The results show that the number of driving wheels is a key technical parameter of CECA large strain technology. As the number of driving wheels increases, the strain distribution becomes more uniform and the slipping phenomenon is controlled. The energy consumed by the workpiece reaches the exit and the torque loss is reduced when the workpiece leaves the exit. The torque distribution is more reasonable. 4 on the drive wheel has the lowest energy consumption, and strain uniformity, low slip phenomenon is an ideal way to drive.