|About this Abstract
||NUMISHEET 2021: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
||Deformation and Fracture in Micro-stamping Process
||Peng Zhang, Michael P. Pereira, Buddhika Abeyrathna, Bernard F. Rolfe, Daniel E. Wilkosz, Peter Hodgson, Matthias Weiss
|On-Site Speaker (Planned)
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 , 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.
Peng Zhang et al. Plastic instability and fracture of thin stainless steel. Submitted to Int J Solids Struct. 2019
||Definite: At-meeting proceedings