Biaxial fatigue crack growth in proton exchange membrane of fuel cells based on cyclic cohesive finite element method
International Journal of Mechanical Sciences(2021)
摘要
•Biaxial fatigue crack growth is modeled using CFEM with the cyclic damage.•Effects of loading conditions on fatigue crack growth are explored systematically.•Both transverse stress and tensile overload reduce fatigue crack growth rate.•Fatigue crack growth is faster under low-high loading than high-low one.•The mechanisms of fatigue crack growth are elaborated by plastic dissipation.
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关键词
Proton exchange membrane fuel cell,Biaxial fatigue crack growth,Cohesive element,Loading condition,Retardation effect,Durability
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