Physical description of cold rolling process of packaging steel strip

Physical description of cold rolling process of packaging steel strip
　　The roll gap part is divided into the following areas:
　　 (1) Elastic deformation zone. On the outside of the inlet and outlet, there is an elastic deformation zone where only elastic deformation occurs. These areas are solved analytically.
　　 (2) Plastic deformation zone. The deformation of the material in the plastic deformation zone is permanent. The numerical integration of stress must be divided into two parts: the front slip zone and the back slip zone. These two parts start from the boundary of the plastic deformation zone and end at the neutral point. These areas are solved by numerical integration because there is no known analytical method to solve this part of the deformation.
　　 describes the area distribution and stress state of the deformation area (including elastic deformation and plastic deformation) more completely. The actual rolling pressure is the sum of the rolling forces of the elastic deformation part and the plastic deformation part. Horizontal extrusion force FQ, deformation zone population and exit tension, population and exit friction play a very important role in the solution of the rolling force of the plastic deformation part. The Kalman differential equation of the mathematical model and its numerical integration method are used to solve the rolling force. A detailed analysis of the force of plastic deformation will be done during the braking process.