| About this Abstract |
| Meeting |
NUMISHEET 2021: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
|
| Symposium
|
NUMISHEET 2021
|
| Presentation Title |
Deformation and Fracture in Micro-stamping Process |
| Author(s) |
Peng Zhang, Michael P. Pereira, Buddhika Abeyrathna, Bernard F. Rolfe, Daniel E. Wilkosz, Peter Hodgson, Matthias Weiss |
| On-Site Speaker (Planned) |
Matthias Weiss |
| Abstract Scope |
Hydrogen fuel cells promise to power future vehicles with zero-emission. An essential component in the fuel cell is the metallic bipolar plate, which is often micro-stamped from an ultra-thin stainless steel sheet. This work investigates the material deformation and ductile fracture behaviour of stainless steel in the micro-stamping process. The hardening and fracture models for the sheet were calibrated in a previous study [1], and, in this work, are implemented in a numerical model of the micro-stamping process. To accurately represent the shape of the micro-stamping tool in the numerical model, the 2D tool profile is measured with an Alicona surface scanner. Experimental micro-stamping trials are performed. The accuracy of the model is assessed by comparison with the experimental results in regard to material thinning, final profile shape and fracture initiation.
[1]Peng Zhang et al. Plastic instability and fracture of thin stainless steel. Submitted to Int J Solids Struct. 2019 |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |