摘要
考虑了轧制变形区内带钢变形抗力的变化,根据卡尔曼方程,推导了塑性变形区内轧制力的计算公式,为避免直接积分的复杂性,将塑性变形区进行单元划分,分别求解前滑区和后滑区各单元的平均轧制力,将所有单元轧制力之和+入口弹性压缩区的轧制力+出口弹性恢复区的轧制力,得到了总的轧制力。计算结果表明,单道次计算时间t<30ms,在2000组计算结果中,计算值与实测值之间有93.3%的相对误差保持在±10%范围内,预测精度较高,满足冷轧在线控制的要求。
A force model for plastic deforming zone was derived from Karman＇s equation considering the variation of yield stress in the deforming zone.To avoid complex integral solution,the plastic deforming zone was divided into a number of elements and the average rolling force of each element in forward slip zone and backward slip zone was calculated respectively.Then,the rolling force of the roll gap was obtained by adding the plastic and elastic force of all the elements,including the force at the entry elastic compression zone and exit elastic recovery zone.Calculation result shows that the time for calculating rolling force of a single pass is less than 30ms,the calculated value has high precision and 93.3% of the relative errors between calculated value and measured value for 2000 groups of calculating results lie within ±10%,so it can fully meet the requirements of online control in cold rolling.
出处
《塑性工程学报》
CAS
CSCD
北大核心
2011年第5期8-12,共5页
Journal of Plasticity Engineering
关键词
冷轧
离散单元
轧制力
cold rolling
discrete element
rolling force
