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Fundamentals of cutting
1Department of Mechanical Engineering, Imperial College London, South Kensington, London SW7 2AZ, UK; Department of Aero, Mechanical and Mechatronics Engineering, University of Sydney, Sydney, Australia.
Interface Focus
|June 9, 2016
Summary
This study quantifies cutting parameters using fracture mechanics, revealing how chip thickness and material properties influence cutting behavior for biological applications.
Area of Science:
- Engineering
- Materials Science
- Biomechanics
Background:
- Orthogonal cutting is a fundamental material removal process.
- Understanding cutting mechanics is crucial for various applications, including biological contexts.
- Fracture mechanics provides a framework for analyzing material failure during cutting.
Purpose of the Study:
- To analyze the orthogonal cutting process using fracture mechanics.
- To quantify the key parameters governing cutting behavior.
- To explore the potential applications of this quantified model in biological cutting studies.
Main Methods:
- Modeling the cutting process as orthogonal cutting with a wedge.
- Analyzing chip behavior based on thickness and curvature.
- Identifying governing parameters such as tool geometry and material properties.
Main Results:
- Chip behavior transitions from elastic to plastic bending and then plastic shear with decreasing thickness.
- Smooth chip formation is observed under specific conditions.
- Cutting process can be quantified by parameters like wedge angle, elastic modulus, yield stress, and fracture toughness.
Conclusions:
- The cutting process is quantifiable through identified parameters.
- This quantitative approach has potential utility in studying biological cutting.
- Further research can explore the precise application in biological systems.