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Bionic Nonsmooth Drag Reduction Mathematical Model Construction and Subsoiling Verification.

Baoguang Wu1, Ruize Zhang1, Pengfei Hou1

  • 1The College of Biological and Agricultural Engineering, Jilin University, 5988 Renmin Street, Changchun 130025, China.

Applied Bionics and Biomechanics
|November 30, 2021
PubMed
Summary
This summary is machine-generated.

Researchers developed a bionic nonsmooth surface design inspired by antlions to reduce soil drag. Field experiments showed a 24.6%–33.7% drag reduction with a curved subsoiler, outperforming smooth and pangolin-scale designs.

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Area of Science:

  • Biomimetics and Mechanical Engineering
  • Agricultural Engineering
  • Tribology

Background:

  • Soil-engaging tools often face high drag forces, increasing energy consumption.
  • Bionic designs offer novel solutions for reducing friction and wear in soil manipulation.
  • Antlions exhibit efficient digging mechanisms using specialized body structures.

Purpose of the Study:

  • To propose a bionic nonsmooth drag-reducing surface design method.
  • To develop a mathematical model for optimizing nonsmooth surface parameters.
  • To verify the drag reduction effectiveness of bionic subsoiler designs in field experiments.

Main Methods:

  • Analysis of antlion digging patterns and surface morphology using scanning electron microscopy.
  • Development of a mathematical model relating bulge altitude, spacing, and movement speed.
  • Design and field testing of bionic and conventional subsoiler shovel tips.

Main Results:

  • The model-derived curved subsoiler exhibited the lowest resistance, outperforming flat and smooth designs.
  • Pangolin scale bionic tips showed moderate drag reduction.
  • The model-designed curved subsoiler achieved a drag reduction rate of 24.6% to 33.7%.

Conclusions:

  • The proposed bionic nonsmooth surface design effectively reduces soil drag.
  • The mathematical model provides a basis for designing efficient drag-reducing surfaces.
  • This approach has potential applications beyond subsoilers to other soil-engaging components.