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论文类型：期刊论文

发表时间：2016-11-01

发表刊物：JOURNAL OF POWER SOURCES

收录刊物：SCIE、EI、Scopus

卷号：331

页面范围：299-307

ISSN号：0378-7753

关键字：Fuel cell stack; Mode analysis; Vibration response

摘要：Proton exchange membrane fuel cell (PEMFC) stacks usually undergo vibration during packing, transportation, and serving time, in particular for those used in the automobiles or portable equipment. To study the stack vibration response, based on finite element method (FEM), a mode analysis is carried out in the present paper. Using this method, we can distinguish the local vibration from the stack global modes, predict the vibration responses, such as deformed shape and direction, and discuss the effects of the clamping configuration and the clamping force magnitude on vibration modes. It is found that when the total clamping force remains the same, increasing the bolt number can strengthen the stack resistance to vibration in the clamping direction, but cannot obviously strengthen stack resistance to vibration in the translations perpendicular to clamping direction and the three axis rotations. Increasing the total clamping force can increase both of the stack global mode and the bolt local mode frequencies, but will decrease the gasket local mode frequency. (C) 2016 Elsevier B.V. All rights reserved.