| About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Presentation Title |
Finite Element Simulation of Edge Fracture by Mapping the Shear-induced Ductile Damage into Hole-expansion Simulation |
| Author(s) |
Lei Mu, Zhe Jia, Ben Guan, Yong Zang |
| On-Site Speaker (Planned) |
Lei Mu |
| Abstract Scope |
A ductile fracture (DF) model (uncoupled type, originally presented at ICTP2017), which is endowed with both stress triaxiality and Lode parameter dependence, is selected to define the ductile damage accumulation from hole-blanking to the subsequent hole-expansion for a DP780 sheet. The calibrated DF model yields an asymmetric 3D fracture surface, which can well describe the material’s ductility within a wide range of stress state from simple shear to balanced biaxial tension. The hole-blanking process is simulated using the DF model for different blanking clearances. With the help of a fully integrated simulation framework, the ductile damage induced by hole-blanking is completely mapped into hole-expansion simulation to incorporate the pre-damage field for the sheared edge. We find that after considering the pre-damage field, the accuracy of edge fracture simulation is significantly improved in terms of both hole-expansion ratio and fracture propagation path. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |