›› 2012, Vol. 33 ›› Issue (11): 3225-3229.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Research on fractal characteristics of marble fragments subjected to impact loading

XU Jin-yu1, 2，LIU Shi1   

  1. 1. Department of Airfield and Building Engineering, Air Force Engineering University, Xi’an 710038, China; 2. College of Mechanics and Civil Architecture, Northwest Polytechnic University, Xi’an 710072, China
  • Received:2012-07-09 Online:2012-11-12 Published:2012-11-14

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Abstract: The size distribution of marble fragmentation subjected to impact loading is analyzed statistically from the view of fractal geometry. The result indicates that the fragment-size distribution of fragments has fractal property. Fractal dimension can quantitatively describe the fragment distribution characteristics of fracture process of marble; and can reflect the fragmentation degree reasonably. There is obvious relativity between the average fragment-size of marble and impact loading speed; but the relativity declines with the increase of loading speed. Subsequently, the relationship between the specific energy absorption and fractal dimension is established. It is illustrated that energy absorbency of marble is crucial factors influencing the changes of fractal dimension. The fractal dimension is an appropriate parameter which generally indicates the whole process of rock fragmentation.

Key words: impact experiment, fragment-size distribution, fractal dimension, specific energy absorption

CLC Number: 

  • TU 452
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