基于离散微单元算法的轧制力模型研究

Research Micro-algorithm Based on Discrete Elements of Rolling Force Model

采用微单元的离散解析方法建立了带钢塑性变形的计算模型,对轧制变形区内轧制力影响因素的变化规律进行研究。根据Von-Mises塑性变形方程,建立单位轧制压力的数学模型。针对轧辊压扁半径与轧制力计算的耦合现象,采用计算机迭代计算的方法完成轧制力的解耦计算。经大型工业轧机生产数据验证,轧制力计算偏差在10%以内,具有较高计算精度和效率。

Used micro-analytical method of discrete units, a strip of plastic deformation model is established. The changing regular of roiling force impacting factors in the region of rolling deformation is researched. According to the Von-Mises plastic deformation formula, the unit set up a mathematical model of roiling pressure. For a radius of squash and roller rolling force of the coupling calculation, computer iteration method of calculation to com- plete decoupling of the roiling force calculation. After large-scale industrial production data to verify mill, rolling force calculation error in less than 10% and high accuracy and efficiency.