Analysis of Contact Noise Due to Elastic Recovery of Surface Asperities for Spherical Contact
Contact noise, often arising from frictional vibrations in mechanical systems, significantly impacts performance and user experience. This study investigates the generation of contact noise due to the elastic recovery of surface asperities during spherical contact with rough surfaces. A numerical al...
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MDPI AG
2025-02-01
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| Series: | Inventions |
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| Online Access: | https://www.mdpi.com/2411-5134/10/1/17 |
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| author | Bora Lee Kyungseob Kim Taewan Kim |
| author_facet | Bora Lee Kyungseob Kim Taewan Kim |
| author_sort | Bora Lee |
| collection | DOAJ |
| description | Contact noise, often arising from frictional vibrations in mechanical systems, significantly impacts performance and user experience. This study investigates the generation of contact noise due to the elastic recovery of surface asperities during spherical contact with rough surfaces. A numerical algorithm was developed to model the noise produced by the elastic–plastic deformation of asperities, incorporating surface roughness and normal load effects. Gaussian-distributed rough surfaces with varying Ra values (0.01–5 μm) were generated to analyze the interaction between a rigid sphere and the rough surface. Contact pressure, asperity deformation, and the resulting acoustic emissions were calculated. The results indicate that, as surface roughness and applied load increase, noise levels within the audible frequency range also rise, exceeding 70 dB under certain conditions. The transition from elastic to plastic deformation significantly influences the noise characteristics. Surfaces with Ra ≥ 0.1 μm showed a 10–15 dB increase in noise compared to smoother surfaces. These findings offer insights into optimizing surface parameters for noise reduction in rolling contact applications, providing a foundation for designing low-noise mechanical systems. Future experimental validations are expected to enhance the practical applications of this analytical framework. |
| format | Article |
| id | doaj-art-a5c5687373104ca388ee8fbe8ede6b60 |
| institution | DOAJ |
| issn | 2411-5134 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Inventions |
| spelling | doaj-art-a5c5687373104ca388ee8fbe8ede6b602025-08-20T02:44:42ZengMDPI AGInventions2411-51342025-02-011011710.3390/inventions10010017Analysis of Contact Noise Due to Elastic Recovery of Surface Asperities for Spherical ContactBora Lee0Kyungseob Kim1Taewan Kim2Research Institute of Mechanical Technology, Pusan National University, Busan 48513, Republic of KoreaDepartment of Intelligent Robotics Graduate School, Pukyong National University, Busan 48513, Republic of KoreaDepartment of Mechanical Engineering, Pukyong National University, Busan 48513, Republic of KoreaContact noise, often arising from frictional vibrations in mechanical systems, significantly impacts performance and user experience. This study investigates the generation of contact noise due to the elastic recovery of surface asperities during spherical contact with rough surfaces. A numerical algorithm was developed to model the noise produced by the elastic–plastic deformation of asperities, incorporating surface roughness and normal load effects. Gaussian-distributed rough surfaces with varying Ra values (0.01–5 μm) were generated to analyze the interaction between a rigid sphere and the rough surface. Contact pressure, asperity deformation, and the resulting acoustic emissions were calculated. The results indicate that, as surface roughness and applied load increase, noise levels within the audible frequency range also rise, exceeding 70 dB under certain conditions. The transition from elastic to plastic deformation significantly influences the noise characteristics. Surfaces with Ra ≥ 0.1 μm showed a 10–15 dB increase in noise compared to smoother surfaces. These findings offer insights into optimizing surface parameters for noise reduction in rolling contact applications, providing a foundation for designing low-noise mechanical systems. Future experimental validations are expected to enhance the practical applications of this analytical framework.https://www.mdpi.com/2411-5134/10/1/17contact noiseacoustic emissionsurface roughness |
| spellingShingle | Bora Lee Kyungseob Kim Taewan Kim Analysis of Contact Noise Due to Elastic Recovery of Surface Asperities for Spherical Contact Inventions contact noise acoustic emission surface roughness |
| title | Analysis of Contact Noise Due to Elastic Recovery of Surface Asperities for Spherical Contact |
| title_full | Analysis of Contact Noise Due to Elastic Recovery of Surface Asperities for Spherical Contact |
| title_fullStr | Analysis of Contact Noise Due to Elastic Recovery of Surface Asperities for Spherical Contact |
| title_full_unstemmed | Analysis of Contact Noise Due to Elastic Recovery of Surface Asperities for Spherical Contact |
| title_short | Analysis of Contact Noise Due to Elastic Recovery of Surface Asperities for Spherical Contact |
| title_sort | analysis of contact noise due to elastic recovery of surface asperities for spherical contact |
| topic | contact noise acoustic emission surface roughness |
| url | https://www.mdpi.com/2411-5134/10/1/17 |
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