Modeling and simulation method for solving rolling force

Abstract

The invention discloses a modeling and simulation method for solving rolling force. A joint simulation total system is established through Simulink for solving a rolling force calculation equation, namely the Kalman differential equation and comprises five subsystems of the backward slip zone subsystem, the forward slip zone subsystem, the stopping system subsystem, the dynamic deformation resistance subsystem and the maximum contact angle subsystem. Solving of rolling plastic zone deformation is achieved through the powerful calculation function of Simulink, changes of the unit rolling force in the deformation zone can be clearly seen through modeling and simulation, existence of a neutral angle is also indicated, and thus the betaF of the neutral angle can be calculated.

Description

technical field [0001] The invention relates to the calculation of rolling force in the field of rolling steel, in particular to a modeling and simulation method for solving the rolling force. Background technique [0002] Theoretical calculation of rolling force during flat roll rolling has a history of more than 90 years since Kalman established the differential equilibrium equation in 1925. Most of the existing rolling force calculation formulas are solved on the basis of Kalman equation with various assumptions. And in order to solve the rolling force more easily, the deformation resistance K generally takes a fixed value according to the steel type (K=1.15σ s , where σ s : yield strength of steel), but often because the yield strength of steel changes during the rolling process, it will greatly affect the calculation accuracy of rolling force. [0003] The Kalman differential equation is used to calculate the rolling force, because this equation is an ordinary linear...

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Problems solved by technology

And in order to solve the rolling force more easily, the deformation resistance K generally takes a fixed value according to the steel type (K=1.15σ s , where σ s : the yield strength of steel), but often due to the change of the yield strength of steel during the rolling process, it will greatly affect the calculation accuracy of the rolling force

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