吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (2): 508-515.doi: 10.13229/j.cnki.jdxbgxb201502026

• Orignal Article • Previous Articles     Next Articles

Numerical simulation of sand flow fixation characteristics of plantar surface of ostrich didactyl foot

ZHANG Rui1, YANG Ming-ming1, LIU Hai-bao1, ZENG Gui-yin1, PAN Run-duo2, LI Jian-qiao1   

  1. 1.Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022,China;
    2.Department of Radiology, the First Hospital, Jilin University, Changchun 130021,China
  • Received:2013-12-20 Online:2015-04-01 Published:2015-04-01

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Abstract: 3D model reconstruction and partition of the plantar surface of ostrich didactyl foot were achieved using reverse engineering. Discrete element method and finite element method were employed to simulate the interactions between the plantar surface of ostrich didactyl foot and sand. It was shown that the flowing extent of sand particles under the plantar surface along the foot breadth direction was greater than that along the foot length direction. This may indicate that the plantar surface morphology of ostrich foot can preferably retard the slippage during ostrich foot moving ahead on sand. Within the plantar surface of ostrich foot, the middle groove in the third toe plantar surface has most obvious effect of sand flow fixation, under which the forces on the sand particle groups present the grid-patterned stable tight distribution. A mathematical model of the middle groove in the third toe plantar surface was established, which may provide theoretical reference for bionic design of the plantar surface of ostrich foot.

Key words: bionic engineering, didactyl foot of ostrich, plantar surface morphology, sand flow fixation, numerical simulation

CLC Number: 

  • TB17
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