SYSTEM SIMULATION OF HOT AND COLD-ROLLING MILLS - ILLUSTRATED BY THE EXAMPLE OF CHATTER IN TANDEM COLD-ROLLING MILLS

The simulation model makes it possible to study how different variable s influence chatter. Furthermore, the effects of mechanical changes or of different in process stock on the susceptibility to chatter can be tested without having to conduct costly experiments. The information value and accuracy of simulation results depend essentially on the qua lity of the models. As a rule it is possible to describe large parts o f mills very precisely Frequently, however, parts remain which are dif ficult to model and require in-depth examination. It is particularly t he latter parts that potentially exert a crucial influence on the resu lts of the simulation. In such cases only consistent consideration of the basic physical factors is of help, combined with many years of exp erience and the verification of the models by comparing simulation res ults with measured values.