Plate and strip rolling mill chatter modeling method

A plate and strip rolling mill chatter modeling method mainly comprises the following steps of 1 establishing a 'rolled piece-roller' coupled vibratory physical model of a plate and strip rolling mill, and 2 establishing 'rolled piece-roller' coupled vibratory mathematic model according to the established coupled vibratory physical model, wherein the second step includes the sub-steps of (1) establishing a friction coefficient model of the coupled vibratory mathematic model and (2) establishing a roller gap rolled-piece horizontal vibratory dynamic equilibrium equation and a roller vertical vibratory dynamic equilibrium equation. Under the coupling effect of friction coefficients, the two vibration equations are synchronized to obtain a 'rolled piece-roller' coupled vibratory equation set. The plate and strip rolling mill chatter modeling method is quick, simple and convenient to operate, and strip breakage and device damage accidents can be effectively controlled.