Journal
MATERIALS
Volume 15, Issue 18, Pages -Publisher
MDPI
DOI: 10.3390/ma15186373
Keywords
micro-bending; size effect; springback; strain gradient; constitutive model
Categories
Funding
- Young Scholars Program of Shandong University, Undergraduate Education Teaching Reform and Research Programs of Shandong University [2021Y220]
- Shandong Provincial Natural Science Foundation [ZR2019BEE062]
- State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology
- China Postdoctoral Science Foundation [2022M711903]
Ask authors/readers for more resources
Hydrogen fuel cells, known for their high energy density and zero emissions, are widely used worldwide. The metallic bipolar plate, a crucial component of the fuel cell, significantly affects its efficiency. However, the springback behavior of the metallic bipolar plate has a great impact on the forming accuracy in micro-scale sheet metal forming.
Hydrogen fuel cells have been used worldwide due to their high energy density and zero emissions. The metallic bipolar plate is the crucial component and has a significant effect on a cell's efficiency. However, the springback behavior of the metallic bipolar plate will greatly influence its forming accuracy in the micro-scale sheet metal forming process. Therefore, accurate calculation of the springback angle of the micro-scale metallic bipolar plate is urgent but difficult given the state of existing elastoplastic theory. In this paper, a constitutive model that simultaneously considers grain size effect and strain gradient is proposed to analyze micro-scale bending behavior and calculate springback angles. The specialized micro-scale four-point bending tool was designed to better calculate the springback angle and simplify the calculation step. A pure micro-bending experiment on a 316LN stainless steel sheet with a thickness of 0.1 mm was conducted to verify the constitutive model's accuracy.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available