Journal of Bionic Engineering

, Volume 5, Supplement 1, pp 72–78 | Cite as

DEM Simulation of Clod Crushing by Bionic Bulldozing Plate

  • Rui ZhangEmail author
  • Bin Chen
  • Jian-qiao Li
  • Shu-cai Xu


Through evolving over millions of years, earthworm has developed the typical wavy body surface. The non-smooth surface shape can break the clods into small pieces, which is one of the important reasons to make earthworm move freely in soil. Based on engineering bionics, the non-smooth body surface of earthworm was regarded as the bionic prototype, and a bionic wavy plane bulldozing plate was designed. In order to analyze the clod crushing mechanism by the bionic bulldozing plate, the nonlinear mechanical model of contact between soil particles was established and the clod-crushing processes by the bionic bulldozing plate and the smooth bulldozing plate were simulated by Distinct Element Method (DEM). Simulation results indicate that the bionic bulldozing plate has stronger clod-crushing ability and can break much more clods than the smooth bulldozing plate can.


earthworm bionic wavy surface clod-crushing non-linear mechanical model of soil DEM simulation 


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  1. [1]
    Lu Y X. Significance and progress of bionics. Journal of Bionics Engineering, 2004, 1, 1–3.MathSciNetCrossRefGoogle Scholar
  2. [2]
    Ren L Q, Tong J, Li J Q, Chen B C. Soil adhesion and biomimetics of soil-engaging components: A review. Journal of Agricultural Engineering Research, 2001, 79, 239–263.CrossRefGoogle Scholar
  3. [3]
    Tong J, Moayad B Z, Ren L Q, Chen B C. Biomimetics in soft terrain machine: A review. Internal Agricultural Engineering Journal, 2004, 13, 71–86.Google Scholar
  4. [4]
    Shelley T. Worms show way to efficiently move. Eureka, 2004, 24, 28–29.Google Scholar
  5. [5]
    Shi W P, Ren L Q, Yan Y Y. The creeping mechanism of the non-smooth wavy surface of earthworm body. Chinese Journal of Mechanics and Engineering, 2005, 27, 73–74. (in Chinese)Google Scholar
  6. [6]
    Li J Q, Liu G M, Zou M, Li Y W, Tian X M. Study on adhesion characteristics of earthworms’ non-smooth surface. Journal of Agricultural Science and Technology of China, 2007, 9, 95–99. (in Chinese)Google Scholar
  7. [7]
    PFC2D (Particle Flow Code in 2 Dimensions) Manual, Version 3.0, Itasca Consulting Group, Inc., Minneapolis, 2002.Google Scholar
  8. [8]
    Zhang R. Research on the Dynamic Behavior of Soil Based on Mesoscopic Simulation by Distinct Element Method, PhD Dissertation, School of Biological & Agricultural Engineering, Jilin University, Changchun, China, 2005. (in Chinese)Google Scholar
  9. [9]
    Zhang R, Li J Q. Simulation on mechanical behavior of cohesive soil by Distinct Element Method. Journal of Terramechanics, 2006, 43, 303–316.CrossRefGoogle Scholar
  10. [10]
    Huang H Y. Discrete Element Modeling of Tool-Rock Interaction, PhD Dissertation, Department of Civil Engineering, University of Minnesota, Minneapolis, USA, 1999.Google Scholar
  11. [11]
    Asaf Z, Rubinstein D, Shmulevich I. Determination of discrete element model parameters required for soil tillage. Soil & Tillage Research, 2007, 92, 227–242.CrossRefGoogle Scholar
  12. [12]
    Zhang R, Li J Q, Zhou C H, Xu S C. Simulation of dynamic behavior of soil ahead of the bulldozing plates with different surface configurations by Discrete Element Method. Transactions of the CSAE, 2007, 23, 13–19. (in Chinese)Google Scholar

Copyright information

© Jilin University 2008

Authors and Affiliations

  1. 1.Key Laboratory of Terrain-Machine Bionics Engineering (Ministry of Education, China)Jilin UniversityChangchunP. R. China
  2. 2.State Key Laboratory of Automotive Safety and EnergyTsinghua UniversityBeijingP. R. China

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