J4 ›› 2011, Vol. 46 ›› Issue (1): 114-118.

• Articles • Previous Articles     Next Articles

The fractal models of real contact area and contact load for  particles surface in PIM

ZOU Na-na1, ZHENG Zhou-shun1*, BING Lei2,WEN Juan1, WANG Shuang1   

  1. 1. School of Mathematical Science and Computational Technolgy, Central South University, Changsha 410083, Hunan,China;
    2. School of Resources and Environment Science, Wuhan University, Wuhan 430079, Hubei, China
  • Received:2009-06-01 Online:2011-12-14 Published:2011-03-16


The fractal characteristic of powder particle surface in PIM is represented by the Weierstrass-Mandelbrot fractal function. Based on the theory of contact mechanics, the process of elastic-plastic deformation as particles contact is analyzed by means the critical areas of elastic and plastic. The fractal models of real contact area and contact load for particles surface in PIM are calculated, when powder particles are in states of elastic, elastic-plastic and plastic.

Key words:  elastic-plastic deformation; real contact area; contact load; fractal

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