Analysis of Deformation Characteristics of Holes on GH5188 Sheet with Densely Holes Formed by Roll Bending [GH5188密排孔薄板滚弯成形孔变形特征分析]

作者：Zhao G.^*; Jin C.; Zhang R.; Cheng Y.; He L.; Guo Z.

来源：Rare Metal Materials and Engineering, 2021, 50(7): 2521-2527.

• Asymmetric three-roll bending
• GH5188
• Hole deformation
• Sheet with densely holes

After solving the material model, geometric model, mesh generation and other key technical problems in the FE model of GH5188 sheet with densely holes formed by roll bending, the 3D FE model of asymmetric three-roll bending of the sheet with densely holes was established. The simulation results of the FE model agree well with the experimental results, and the model is reliable. And then, a representation method for the deformation of the holes on the sheet with densely holes was proposed. The deformation rule of the holes on the sheet with densely holes was analyzed. The results show that the expansion of the outside face is slightly greater than the compression of the inside face after the hole deformation, and the deformation of the holes fluctuates slightly and increases slightly during the rolling process. The deformation difference of the holes along the same axis direction of the forming part is teeny. The deformation of the holes along the same circumference direction of the forming part fluctuates, but the difference is very small.