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Sliding State Analysis of Fractal Rough Interface Based on the Finite Element Method
Jianpeng Wu1, Liyong Wang1, Le Li2
1The Key Laboratory of Modem Measurement and Control Technology in Ministry of Education, Beijing Information Science & Technology University, Beijing 100192, China.
Materials (Basel, Switzerland)
|April 30, 2021
Summary
Understanding wet clutch friction is key. This study models surface topography to pinpoint stress and strain, guiding better clutch component design and manufacturing for improved reliability.
Area of Science:
- Tribology
- Mechanical Engineering
- Materials Science
Background:
- Wet clutch friction components experience high temperatures and stress due to changing surface topography.
- These factors can lead to abnormal friction coefficients and component failure.
Purpose of the Study:
- To analyze stress and strain variations in wet clutch friction pairs.
- To improve the reliability and reduce failure phenomena in clutch friction components.
Main Methods:
- Scanning and processing 3D fractal surface topography data of rough asperities.
- Establishing a finite element model of the rotary sliding friction pair incorporating micro surface topography.
- Analyzing surface stress and strain using experimental friction coefficient data as input.
Main Results:
- Maximum stress and plastic strain concentrate at the inner radius edge during contact between rough and smooth surfaces.
- The finite element model effectively simulates the tribological behavior of the friction pair.
Conclusions:
- The study provides critical insights into stress and strain distribution within wet clutch friction pairs.
- Findings offer significant guidance for the structural design and processing technologies of vehicle clutch friction components.
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