Stress and plastic deformation of MEA in fuel cells - Stresses generated during cell assembly

被引：66
作者：
Bograchev, Danfil [2 ]
Gueguen, Mikael [3 ]
Grandidier, Jean-Claude [3 ]
Martemianov, Serguei [1 ]
机构：
[1] Univ Poitiers, ESIP, CNRS, UMR 6608,LET,Lab Etudes Therm, F-86022 Poitiers, France
[2] Frumkin Inst Phys Chem & Electrochem RAN, Moscow 117071, Russia
[3] CNRS, ENSMA, UMR 6617,LMPM, Lab Phys & Mecan Mat, F-86962 Futuroscope, France
来源：
JOURNAL OF POWER SOURCES | 2008年 / 180卷 / 01期
关键词：
fuel cell design; proton exchange membrane (PEM); Nafion; mechanical response; ABAQUS;
D O I：
10.1016/j.jpowsour.2008.02.048
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：393 / 401
页数：9
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