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Biomimetics Design of Tooth Root Zone at Cylindrical Gears Profile
Ivana Atanasovska1, Dejan Momcilovic2, Tatjana Lazovic3
1Mathematical Institute of the Serbian Academy of Sciences and Arts, 11000 Belgrade, Serbia.
Biomimetics (Basel, Switzerland)
|July 28, 2023
Summary
Bio-inspired gear designs significantly reduce stress concentration in tooth roots. This optimization enhances fatigue resistance for steel gears by 7% and cast iron gears by 10.3%, improving machine element performance.
Area of Science:
- Mechanical Engineering
- Biomimetics
- Materials Science
Background:
- Modern machine elements demand size reduction, increased energy efficiency, and higher load capacity.
- Optimization of gear tooth profiles and novel designs are crucial for meeting these demands.
Purpose of the Study:
- To optimize gear tooth profiles using nature-inspired solutions.
- To improve the fatigue resistance of spur gear tooth roots by reducing stress concentration.
Main Methods:
- Finite element method (FEM) for stress and strain analysis.
- Modeling and optimization of a specific gear pair.
- Application of the theory of critical distances for tooth root strength analysis.
Main Results:
- Bio-inspired design of tooth root zones demonstrated improved stress distribution.
- Significant stress reduction achieved: approximately 7% for steel gears and 10.3% for cast iron gears.
- Analysis of material variation influence on stress reduction was performed.
Conclusions:
- Nature-inspired design offers an effective strategy for enhancing gear performance.
- Optimized tooth root zones lead to increased tooth root fatigue resistance.
- The study validates the effectiveness of biomimetic approaches in mechanical design.
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