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Scorpion back inspiring sand-resistant surfaces

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Abstract

A new approach which adopted the idea of coupling bionics to improve erosion resistance was presented, by taking the desert scorpion as the research object. The anti-erosion characteristic rules and mechanism of desert scorpion’s surface under the dynamics effect of gas/solid mixed media were researched, especially the comprehensive influence mechanism of surface morphology, microstructure, creature flexibility and many other factors was studied. Simulation by CFD software was applied to predict the relative erosion severity. Samples with the coupled bionic configurations and flexibility were produced. Experiment optimum design theory was employed to design experiment scheme. Silica sand of particle size of 105–830 μm was used as the erodent. The erosion tests were carried out to validate the simulation results obtained. It is shown that the predicted results are in agreement with those obtained from the experiment. And contrast tests were carried out at the best and worst test points of erosion resistance for four samples. Contrast tests show that the erosion resistance trend occurs in such order with the best erosion resistance as coupling sample, groove, smooth and flexibility, and smooth, and the increasing rate of erosion resistances in sequence of 12.08%, 8.87%, 6.03% in the best test point. But in the poorest point, the increasing rate of erosion resistance is in sequence of 15.64%, 9.53%, 6.59%. The morphologies of eroded surface were examined by the scanning electron microscope, and the possible wear mechanism was discussed.

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Authors and Affiliations

  1. Key Laboratory of Bionics Engineering of Ministry of Education, Jilin University, Changchun, 130022, China

    Jun-qiu Zhang  (张俊秋), Zhi-wu Han  (韩志武), Rong-feng Ma  (马荣峰), Wei Yin  (尹维), You Lü  (吕尤) & Lu-quan Ren  (任露泉)

Authors
  1. Jun-qiu Zhang  (张俊秋)
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  2. Zhi-wu Han  (韩志武)
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  3. Rong-feng Ma  (马荣峰)
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  4. Wei Yin  (尹维)
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  5. You Lü  (吕尤)
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  6. Lu-quan Ren  (任露泉)
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Corresponding author

Correspondence to Zhi-wu Han  (韩志武).

Additional information

Foundation item: Projects(51205161, 51175220, 51290292) supported by the National Natural Science Foundation of China; Projects(20120061120051, 20100061110023) supported by Specialized Research Fund for the Doctoral Program of Higher Education of China; Project(OSR-04-04) supported by Cooperation and Innovation to National Potential Oil and Gas for Production and Research, China; Project(200905016) supported by Ten Outstanding Youth Fund Project of Jilin University, China; Project(2012M511345) supported by China Postdoctoral Science Foundation; Project(450060481176) supported by Basic Scientific Research Expenses of Jilin University, China

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Zhang, Jq., Han, Zw., Ma, Rf. et al. Scorpion back inspiring sand-resistant surfaces. J. Cent. South Univ. 20, 877–888 (2013). https://doi.org/10.1007/s11771-013-1561-4

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  • DOI: https://doi.org/10.1007/s11771-013-1561-4

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