Modares Mechanical Engineering

Modares Mechanical Engineering

Numerical and experimental investigation of the effect of geometrical parameters on the springback metallic bipolar plates in the stamping process

Document Type : Original Research

Authors
Farzad Ahmadi Khatir 1
Mohammad Mahdi Barzegari 2
1 Faculty of Mechanical Engineering, Tarbiat Modares University
2 Fuel Cell Technology Research Laboratory, Malek Ashtar University of Technology
Abstract
Today, the use of metallic bipolar plates in the fuel cell industry has attracted the attention of many researchers due to its much lower cost than thick graphite plates produced by machining. The best method for the production of metallic bipolar plates is forming process. Among the different forming methods, the stamping process has a higher production rate, simpler process, and lower production cost. One of the major problems in the formation of the metallic bipolar plates is the springback of the sheet after forming, which causes distortion and non-uniformity in the formed channels. In this study, the effects of geometrical parameters such as draft angle, corner radius, depth of channel and process parameter such as lubricant on filling profile as well as springback of formed sheet made of stainless steel 304 with a thickness of 0.1 mm were investigated. For this purpose, the simulation was performed using ABAQUS finite element software and the results were verified by experimental analysis. Then the outputs were evaluated by changing the input parameters in the simulation. The results showed that the draft angle and channel width had the most influence on the springback value of the formed plates. The results related to the process parameter such as the lubricant effect showed that the springback value is almost independent of the lubricant parameter. However, in quite equal conditions, the stress distribution in the corners and channel walls is much more uniform when using the lubricant.
Keywords
PEM fuel cell
Metallic bipolar plate
Stamp forming
Springback
ABAQUS simulation

Subjects

[1] Alizadeh, E., et al., Investigation of contact pressure distribution over the active area of PEM fuel cell stack. International Journal of Hydrogen Energy, 2016. 41(4): p. 3062-3071.
[2] Barzegari, M.M., E. Alizadeh, and A.H. Pahnabi, Grey-box modeling and model predictive control for cascade-type PEMFC. Energy, 2017. 127: p. 611-622.
[3] Rahimi-Esbo, M., et al., Improving PEM fuel cell performance and effective water removal by using a novel gas flow field. international journal of hydrogen energy, 2016. 41(4): p. 3023-3037.
[4] Barbir, F., PEM fuel cells: theory and practice. 2012: Academic press.
[5] Alizadeh, E., et al., A novel cooling flow field design for polymer electrolyte membrane fuel cell stack. International Journal of Hydrogen Energy, 2016. 41(20): p. 8525-8532.
[6] Barzegari, M.M., et al., Dynamic modeling and validation studies of dead-end cascade H2/O2 PEM fuel cell stack with integrated humidifier and separator. Applied Energy, 2016. 177: p. 298-308.
[7] Kang, S., Quasi-three-dimensional dynamic modeling of a proton exchange membrane fuel cell with consideration of two-phase water transport through a gas diffusion layer. Energy, 2015. 90: p. 1388-1400.
[8] Mehta, V. and J.S. Cooper, Review and analysis of PEM fuel cell design and manufacturing. Journal of power sources, 2003. 114(1): p. 32-53.
[9] Taherian, R., A review of composite and metallic bipolar plates in proton exchange membrane fuel cell: Materials, fabrication, and material selection. Journal of Power Sources, 2014. 265: p. 370-390.
[10] Fetohi, A.E., et al., Study of different aluminum alloy substrates coated with Ni–Co–P as metallic bipolar plates for PEM fuel cell applications. international journal of hydrogen energy, 2012. 37(14): p. 10807-10817.
[11] Choi, S.-W., et al., Improvement of formability for fabricating thin continuously corrugated structures in sheet metal forming process. Journal of mechanical science and technology, 2012. 26(8): p. 2397-2403.
[12] Hu, Q., et al., Investigation of stamping process of metallic bipolar plates in PEM fuel cell—Numerical simulation and experiments. International journal of hydrogen energy, 2014. 39(25): p. 13770-13776.
[13] Mahabunphachai, S., Ö.N. Cora, and M. Koç, Effect of manufacturing processes on formability and surface topography of proton exchange membrane fuel cell metallic bipolar plates. Journal of Power Sources, 2010. 195(16): p. 5269-5277.
[14] Elyasi, M., F. Ahmadi Khatir, and M. Hosseinzadeh, Experimental study of the die patterns in rubber pad forming process for producing of metallic bipolar plates. Modares Mechanical Engineering, 2015. 15(9): p. 179-186. (In Persion)
[15] Elyasi, M., F. Ahmadi, and M. Hosseinzadeh, Investigation of lubricant effect on depth filling of metallic bipolar plates with concave and convex patterns in rubber pad forming process. Modares Mechanical Engineering, 2016. 15(12): p. 450-460. (In Persion)
[16] Elyasi, M., F.A. Khatir, and M. Hosseinzadeh, manufacturing metallic bipolar plate fuel cells through rubber pad forming process. The International Journal of Advanced Manufacturing Technology, 2017. 89(9-12): p. 3257-3269.
[17] Chen, T., et al. Stamping and springback of PEMFC metal bipolar plate. in Advanced Materials Research. 2011. Trans Tech Publ.
[18] Huang, K.-J., S.-J. Hwang, and W.-H. Lai, Evaluation of forming quality and spring-back of fuel cell metallic bipolar plate during stamping via simulations. Journal of Aeronautics, Astronautics and Aviation, 2015. 47(2): p. 131-141.
[19] Dur, E., Ö.N. Cora, and M. Koç, Effect of manufacturing conditions on the corrosion resistance behavior of metallic bipolar plates in proton exchange membrane fuel cells. Journal of Power Sources, 2011. 196(3): p. 1235-1241.
[20] Hosford, W.F. and R.M. Caddell, Metal forming: mechanics and metallurgy. 2011: Cambridge University Press.
Modares Mechanical Engineering
Volume 20, Issue 11
November 2020
Pages 2617-2628