Effects of non-Newtonian lubricants and elastic coating on transient elastohydrodynamic lubrication at impact squeeze loading
This study explores the effects of non-Newtonian lubricants on elastohydrodynamic lubrication with coating at impact and rebound loading using power law lubricants. The coupled transient modified Reynolds, rheology, elasticity deformation, and ball motion equations are solved simultaneously, thus ob...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2019-07-01
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| Series: | Advances in Mechanical Engineering |
| Online Access: | https://doi.org/10.1177/1687814019866070 |
| _version_ | 1818826077263364096 |
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| author | Li-Ming Chu Yuh-Ping Chang Hsiang-Chen Hsu |
| author_facet | Li-Ming Chu Yuh-Ping Chang Hsiang-Chen Hsu |
| author_sort | Li-Ming Chu |
| collection | DOAJ |
| description | This study explores the effects of non-Newtonian lubricants on elastohydrodynamic lubrication with coating at impact and rebound loading using power law lubricants. The coupled transient modified Reynolds, rheology, elasticity deformation, and ball motion equations are solved simultaneously, thus obtaining the transient pressure profiles, film shapes, normal squeeze velocities and accelerations. The effect of the flow index ( n ) is equivalent to enhancing the lubricant viscosity, also enlarging the damper effect. The simulation results reveal that the film thickness, the primary peak, and the secondary peak increase with increasing the flow index. The greater the flow index is, the earlier the dimple form, and the smaller the maximum value of the impact force is. The rebounding velocity and the peak value of acceleration increase with decreasing the flow index. Moreover, this research possesses academic innovation and industrial application. |
| first_indexed | 2024-12-19T00:21:55Z |
| format | Article |
| id | doaj.art-f1c6f1b4599f41dfbef76216da467a17 |
| institution | Directory Open Access Journal |
| issn | 1687-8140 |
| language | English |
| last_indexed | 2024-12-19T00:21:55Z |
| publishDate | 2019-07-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Advances in Mechanical Engineering |
| spelling | doaj.art-f1c6f1b4599f41dfbef76216da467a172022-12-21T20:45:30ZengSAGE PublishingAdvances in Mechanical Engineering1687-81402019-07-011110.1177/1687814019866070Effects of non-Newtonian lubricants and elastic coating on transient elastohydrodynamic lubrication at impact squeeze loadingLi-Ming Chu0Yuh-Ping Chang1Hsiang-Chen Hsu2Interdisciplinary Program of Green and Information Technology, Department of Applied Science, National Taitung University, Taitung CityDepartment of Mechanical Engineering, Kun Shan University, Tainan CityDepartment of Industrial Management, I-Shou University, Kaohsiung CityThis study explores the effects of non-Newtonian lubricants on elastohydrodynamic lubrication with coating at impact and rebound loading using power law lubricants. The coupled transient modified Reynolds, rheology, elasticity deformation, and ball motion equations are solved simultaneously, thus obtaining the transient pressure profiles, film shapes, normal squeeze velocities and accelerations. The effect of the flow index ( n ) is equivalent to enhancing the lubricant viscosity, also enlarging the damper effect. The simulation results reveal that the film thickness, the primary peak, and the secondary peak increase with increasing the flow index. The greater the flow index is, the earlier the dimple form, and the smaller the maximum value of the impact force is. The rebounding velocity and the peak value of acceleration increase with decreasing the flow index. Moreover, this research possesses academic innovation and industrial application.https://doi.org/10.1177/1687814019866070 |
| spellingShingle | Li-Ming Chu Yuh-Ping Chang Hsiang-Chen Hsu Effects of non-Newtonian lubricants and elastic coating on transient elastohydrodynamic lubrication at impact squeeze loading Advances in Mechanical Engineering |
| title | Effects of non-Newtonian lubricants and elastic coating on transient elastohydrodynamic lubrication at impact squeeze loading |
| title_full | Effects of non-Newtonian lubricants and elastic coating on transient elastohydrodynamic lubrication at impact squeeze loading |
| title_fullStr | Effects of non-Newtonian lubricants and elastic coating on transient elastohydrodynamic lubrication at impact squeeze loading |
| title_full_unstemmed | Effects of non-Newtonian lubricants and elastic coating on transient elastohydrodynamic lubrication at impact squeeze loading |
| title_short | Effects of non-Newtonian lubricants and elastic coating on transient elastohydrodynamic lubrication at impact squeeze loading |
| title_sort | effects of non newtonian lubricants and elastic coating on transient elastohydrodynamic lubrication at impact squeeze loading |
| url | https://doi.org/10.1177/1687814019866070 |
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