2018 Volume 104 Issue 9 Pages 493-500
In the Hot-Rolling process, when a thin strip runs on the Run-Out-Table (ROT) at high speed in the state of non-tension (at the head or the tail of the strip), the defects resulting from the running instability pose a chronic problem. Moreover, because of unstable running phenomenon, the maximum line speed has been restrained, and has also become an aggravation factor of productivity. In order to solve this problem and improve this process, various methods have been proposed in the past, but it has not been eradicated completely.
In this paper, we proposed using the numerical simulation method based on multi-body dynamics (MBD) to simulate the ROT strip running phenomenon. The proposed strip model is a sub-class of the large deflection plate model. This model prevents the numerical instabilities, which come from the buckling phenomenon and the finite rotation with the strip large deflection. It was clarified that the numerical results corresponded with the theoretical result and the experimental results. By utilizing the proposed method, the cost and term which are necessary to improve the unstable strip running phenomena become cheaper and shorter.
