| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Multi Scale Modeling of Microstructure Deformation in Material Processing
|
| Presentation Title |
Crystal Plasticity-based Forming Limit Prediction for Ultra-thin Bipolar Plate for Proton Exchange Membrane Fuel Cells |
| Author(s) |
Minh Tien Tran, Dae Ho Lee, Huai Wang, Ho Won Lee, Dong-Kyu Kim |
| On-Site Speaker (Planned) |
Minh Tien Tran |
| Abstract Scope |
In the present study, crystal plasticity finite element (CPFE) analysis in conjunction with the Marciniak-Kuczynski (M-K) approach was used to predict the forming limit diagram (FLD) of a 0.08 mm-thick bipolar plate designed for proton exchange membrane (PEM) fuel cells. The Nakazima formability test was employed to measure the FLD of the ultra-thin material. Uniaxial tensile test and electron backscatter diffraction (EBSD) measurement were conducted to characterize the mechanical behavior and to obtain the texture of the material. A hybrid representative volume element (RVE), governed by a rate-dependent crystal plasticity model, was developed and used in the forming limit analysis. The predicted FLD shows an excellent agreement with the experimental results. Furthermore, the effect of subsurface crystal orientations on the strain localization in ultra-thin bipolar plate is discussed in detail. |