1. Experimental study of EHL film thickness behaviour at high speed in ball-on-ring contacts
- Author
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Ziqiang Zhao, Yaoguang Zhang, Wenzhong Wang, and Shengguang Zhang
- Subjects
Materials science ,business.industry ,Mechanical Engineering ,Test rig ,02 engineering and technology ,Surfaces and Interfaces ,021001 nanoscience & nanotechnology ,Surfaces, Coatings and Films ,020303 mechanical engineering & transports ,Optics ,0203 mechanical engineering ,Low speed ,Mechanics of Materials ,Motion direction ,Ball (bearing) ,0210 nano-technology ,business - Abstract
To date few experimental studies of EHL film are at speed above 5 m/s, and most optical EHL experiment is based on classical ball-on-disc contact. This paper presents a newly developed optical EHL test rig in ball-on-ring contact for the investigation of film thickness at high speed. Tests are conducted under tractive rolling condition up to 52 m/s. Results show that, film thickness follows classical prediction at low speed, deviates but still increases at medium speed and finally decreases at very high speed; severe sliding occurs at high speed; the film thickness profile along motion direction changes from flat to wedge. more...
- Published
- 2017
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