Computer simulation of residual stress of cold rolling pre-stretch board

To eliminate the residual stress formed during the process of cold rolling Al board, the distribution of stress in the deformation region is simulated by elas-plastics large deformation finite element analysis. On the basis of analyzing the effects towards residual stress from different rolling loadcase and stretching the parameters toward different rolling loadcase board, the value of cold rolling residual stress caused by different compress and the effect of the residual stress elimination influenced by stretching force and stretching deformation can be figured out. The simulative results show that the method of the proper stretching can evenly and partly eliminate the residual stress, reduce the effect toward the following machining procedure induced by the residual stress.