Simulation of Strip Lateral Dynamics on Continuous Processing Lines

Abstract

In continuous metal strip processing lines, such as pickling, annealing, and surface treatment lines, lateral instability is a common problem. We have developed the simulation tool based on multibody dynamics (MBD). We divided a strip in the traveling direction, and combined them based on the beam theory. In consideration of the difference between a beam and a thin strip, the torsional rigidity was corrected by FEM analysis. To verify the strip traveling action, the MBD simulation was compared with the experiment in the cases of an inclined roll and a steering roll. The inclined roll controls a lateral strip movement by pushing the strip with an angle, and the steering roll controls a lateral strip movement by inclining itself. The results of the simulation and the experiment were well in agreement in each case. This simulation tool will help us to clarify lateral dynamics, improve performance of lateral control devices.