Using the nonlinear rigid-viscoplastic finite element method(FEM),a finite element simulation of the hot strip continuous rolling process was done,which completely integrates different phenomena such as the metallurgical behavior of the strip and the thermo-mechanics in the strip based on the physical metallurgical microstructural evolution law.By combining with the process parameters of certain 2 050 mm hot strip rolling,an actual rolling process of low carbon steel SS400 was simulated using the FEM model.Based on the simulation results,the distributions of the strain field,the temperature field,and the microstructure were presented.Meanwhile,the simulated rolling force,temperature,and microstructure are in good agreement with the measured results.
WANG Min-ting ZANG Xin-liang LI Xue-tong DU Feng-shan
With the aid of elastic-plastic large deformation finite element method (FEM), an elastic-plastic and coupling thermo-mechanical model was built to calculate the bending process of the bent pipe, combining with local heating or cooling of the bent pipe. Based on the FEM simulation, the metal deformation during the bending process was analyzed in detail. The thinning and thickening ratio of the pipe wall thickness, the ovality of the cross-section of the pipe and the spring-back angle, etc., are presented.
LI Xue-tong WANG Min-ting DU Feng-shan XU Zhi-qiang
