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借助ANSYS/LS-DYNA软件,建立楔横轧层合轴有限元模型,根据四因素三水平的正交实验进行部分厚径比轧制实验。通过有限元数值模拟,分析工艺参数成形角、展宽角、断面收缩率和轧制温度对厚径比的影响规律。结果表明:轧制实验结果和有限元模拟的结果相符合,有限元模型可以用来预测厚径比。厚径比随着展宽角的增大先迅速下降,后缓慢下降;随着轧制温度的增大先增加,后缓慢增加;随着断面收缩率的增大先缓慢增加,后趋于平缓;随着成形角的增大变化不明显。对厚径比的影响主次为:展宽角、轧制温度、断面收缩率、成形角。研究结果有助于指导层合轴覆材厚度和基材半径尺寸的调控与设计。
With ANSYS / LS-DYNA software, the finite element model of wedge cross-lamination was established, and the experiment of partial thickness-thickness ratio rolling was carried out according to the orthogonal experiments of four factors and three levels. Through the numerical simulation of finite element method, the influence law of forming angle, spreading angle, reduction of area and rolling temperature on the ratio of thickness to thickness was analyzed. The results show that the results of rolling experiment are consistent with the results of finite element simulation. The finite element model can be used to predict the aspect ratio. The ratio of thickness to diameter decreases rapidly with the increase of spreading angle, and then decreases slowly. With the increase of rolling temperature, the thickness increases first and then increases slowly, then slowly increases with the increase of reduction of area, and then tends to be gentle. With the increase of forming angle change is not obvious. The effect of thickness to diameter ratio of primary and secondary: widening angle, rolling temperature, reduction of area, forming angle. The results will help guide the design of the thickness of the laminated shaft and the radius of the substrate.