Title of article :
Stress and plastic deformation of MEA in fuel cells: Stresses generated during cell assembly
Author/Authors :
Daniil Bograchev، نويسنده , , Mikael Gueguen، نويسنده , , Jean-Claude Grandidier، نويسنده , , Serguei Martemianov، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Abstract :
A linear elastic–plastic 2D model of fuel cell with hardening is developed for analysis of mechanical stresses in MEA arising in cell assembly procedure. The model includes the main components of real fuel cell (membrane, gas diffusion layers, graphite plates, and seal joints) and clamping elements (steel plates, bolts, nuts). The stress and plastic deformation in MEA are simulated with ABAQUS code taking into account the realistic clamping conditions. The stress distributions are obtained on the local and the global scales. The first one corresponds to the single tooth/channel structure. The global scale deals with features of the entire cell (the seal joint and the bolts). Experimental measurements of the residual membrane deformations have been provided at different bolts torques. The experimental data are in a good agreement with numerical predictions concerning the beginning of the plastic deformation.
Keywords :
mechanical response , ABAQUS , proton exchange membrane (PEM) , Fuel cell design , Nafion
Journal title :
Journal of Power Sources
Journal title :
Journal of Power Sources