A Comparative Study of Failure with Incremental Forming

10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes

Wu, S.H.^1 ; Song, N.N.^2 ; Pires, F.M. Andrade^1

Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias 400, Porto

4200-465, Portugal^1

INEGI, University of Porto, Rua Dr. Roberto Frias 400, Porto

4200-465, Portugal^2

关键词: Commercial software;    Comparative studies;    Continuum damage model;    Deformation behavior;    Essential characteristic;    Finite element simulations;    Incremental forming;    Localized deformations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/734/3/032065/pdf
DOI  :  10.1088/1742-6596/734/3/032065

来源: IOP

【 摘 要 】

Incremental forming (ISF) is an innovative flexible sheet metal forming process which can be used to manufacture complex shapes from various materials. Due to its flexibility, it has attracted more and more attention over recent decades. Localized deformation and shear through the thickness are essential characteristics of ISF. These lead to specific failure modes and formability of ISF that are different from the conventional stamping process. In this contribution, three continuum damage models (Lemaitre, Gurson, extended GTN models) are formulated and fully coupled with the finite element simulation in a commercial software ABAQUS to predict failure in incremental forming. A comparative investigation of these three damage models has been carried out to analyze both the deformation behavior and failure mechanisms.