Numerical studies on Vibro-creep of PEM fuel cell elements used in mobile applications |
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| Affiliation: | 1. Department of Marine Engineering, National Taiwan Ocean University, Keelung 202301, Taiwan;2. Department of Mechanical and Mechatronic Engineering, National Taiwan Ocean University, Keelung 202301, Taiwan;3. Nuclear Fuels and Materials Division, Institute of Nuclear Energy Research, Taoyuan 32546, Taiwan;1. State Key Laboratory of Multiphase Flow in Power Engineering, Xi''an Jiaotong University, Xi''an, People''s Republic of China;2. China Petroleum Pipeline Engineering Corporation, Langfang, People''s Republic of China;1. Energy Storage Research Group, Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia;2. Department of Electrical and Electronic Engineering, Faculty of Engineering, National Defence University of Malaysia, Kem Sungai Besi, Kuala Lumpur, Malaysia;1. School of Economics and Management, North China Electric Power University, China;2. Department of Energy, Aalborg University, Denmark |
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| Abstract: | The wide use of fuel cells in mobile applications carries significant risks caused by accompanying vibrations, the origin of which can be found in the interaction of the ground or other vibration-generating components. The classical approach treated vibration and creep as two separate phenomena. One generated pulses, and the other caused durable deformations under the influence of temperature and static loads. This work combines both phenomena, describing the impact of vibrations on the material's structure and estimating the magnitude of durable deformations caused by the aggregation of alloy inclusions and dislocations in the material mesh. The Norton creep model and the failure model described by Kachanov were used for this. In addition, Stobyriev's reduced stresses were used to reflect the failure spectrum of the material: from brittle to ductile. |
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| Keywords: | Fuel cell Creep Vibro-creep Heat affected zone (HAZ) Failure Kachanov |
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