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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2007, Vol. 8 Issue (3 ): 10-    DOI: 10.1631/jzus.2007.A0403
    
Modeling of contact surface morphology and dust particles by using finite element method
WANG Dong, XU Liang-jun
Research Lab of Electric Contacts, Beijing University of Post & Telecommunications, Beijing 100876, China
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Abstract  The effect of dust particles on electric contacts and a hazardous size range of hard dust particles using a rigid model were discussed before. As further research, elastic-plastic model of finite element analysis was established in this work, which is closer to real condition. In this work, the behavior of large size and small size particles, and the influence of particles hardness were investigated. The calculating result of small-size particles presents a general hazardous size coefficient for different contact surface morphology; for large-size particles, it presents a hazardous size coefficient for complicated composition of the dust. And the effect of the dust shape is also discussed.

Key words： Dust particles      Surface morphology      Finite element method (FEM)      Hazardous size     
Received: 19 December 2006     
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WANG Dong
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WANG Dong, XU Liang-jun. Modeling of contact surface morphology and dust particles by using finite element method. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2007, 8(3 ): 10-.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2007.A0403     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2007/V8/I3 /10

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