Transient Analysis of Isothermal Elastohydrodynamic Point Contacts under Complex Kinematics of Combined Rolling, Spinning and Normal Approach
This paper presents a brief review of elastohydrodynamic analysis in commemoration of the immense contributions of Duncan Dowson. This paper also presents an elastohydrodynamic analysis of the elliptical point contact problem under steady state as well as transient conditions. The overall methodolog...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-08-01
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| Series: | Lubricants |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4442/8/8/81 |
| _version_ | 1797560139537973248 |
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| author | Gajarajan Sivayogan Ramin Rahmani Homer Rahnejat |
| author_facet | Gajarajan Sivayogan Ramin Rahmani Homer Rahnejat |
| author_sort | Gajarajan Sivayogan |
| collection | DOAJ |
| description | This paper presents a brief review of elastohydrodynamic analysis in commemoration of the immense contributions of Duncan Dowson. This paper also presents an elastohydrodynamic analysis of the elliptical point contact problem under steady state as well as transient conditions. The overall methodology is validated against numerical predictions and experimental observations of acknowledged historical sources. The validated methodology is used to make original contributions in the elastohydrodynamics of elliptical point contact subjected to complex combined contact kinematics, including rolling/sliding, mutual convergence and separation (squeeze film motion) of contacting pairs, when subjected to reciprocating and spinning motions. This combined complex contact kinematics under transient conditions has not hitherto been reported in the literature. This paper shows the critical role of squeeze film motion upon lubricant film thickness. The results also show that the influence of spin motion is only significant at fairly high values of angular velocity and in the absence of a rolling/sliding motion. |
| first_indexed | 2024-03-10T17:55:08Z |
| format | Article |
| id | doaj.art-aeb0298e3341440bb21c1f97eb5a0ea9 |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-03-10T17:55:08Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-aeb0298e3341440bb21c1f97eb5a0ea92023-11-20T09:12:57ZengMDPI AGLubricants2075-44422020-08-01888110.3390/lubricants8080081Transient Analysis of Isothermal Elastohydrodynamic Point Contacts under Complex Kinematics of Combined Rolling, Spinning and Normal ApproachGajarajan Sivayogan0Ramin Rahmani1Homer Rahnejat2Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Leicestershire LE11 3TU, UKWolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Leicestershire LE11 3TU, UKSchool of Engineering, University of Central Lancashire, Preston PR 1 2HE, UKThis paper presents a brief review of elastohydrodynamic analysis in commemoration of the immense contributions of Duncan Dowson. This paper also presents an elastohydrodynamic analysis of the elliptical point contact problem under steady state as well as transient conditions. The overall methodology is validated against numerical predictions and experimental observations of acknowledged historical sources. The validated methodology is used to make original contributions in the elastohydrodynamics of elliptical point contact subjected to complex combined contact kinematics, including rolling/sliding, mutual convergence and separation (squeeze film motion) of contacting pairs, when subjected to reciprocating and spinning motions. This combined complex contact kinematics under transient conditions has not hitherto been reported in the literature. This paper shows the critical role of squeeze film motion upon lubricant film thickness. The results also show that the influence of spin motion is only significant at fairly high values of angular velocity and in the absence of a rolling/sliding motion.https://www.mdpi.com/2075-4442/8/8/81elastohydrodynamic lubricationelliptical point contactstransient analysiscomplex combined contact kinematics |
| spellingShingle | Gajarajan Sivayogan Ramin Rahmani Homer Rahnejat Transient Analysis of Isothermal Elastohydrodynamic Point Contacts under Complex Kinematics of Combined Rolling, Spinning and Normal Approach Lubricants elastohydrodynamic lubrication elliptical point contacts transient analysis complex combined contact kinematics |
| title | Transient Analysis of Isothermal Elastohydrodynamic Point Contacts under Complex Kinematics of Combined Rolling, Spinning and Normal Approach |
| title_full | Transient Analysis of Isothermal Elastohydrodynamic Point Contacts under Complex Kinematics of Combined Rolling, Spinning and Normal Approach |
| title_fullStr | Transient Analysis of Isothermal Elastohydrodynamic Point Contacts under Complex Kinematics of Combined Rolling, Spinning and Normal Approach |
| title_full_unstemmed | Transient Analysis of Isothermal Elastohydrodynamic Point Contacts under Complex Kinematics of Combined Rolling, Spinning and Normal Approach |
| title_short | Transient Analysis of Isothermal Elastohydrodynamic Point Contacts under Complex Kinematics of Combined Rolling, Spinning and Normal Approach |
| title_sort | transient analysis of isothermal elastohydrodynamic point contacts under complex kinematics of combined rolling spinning and normal approach |
| topic | elastohydrodynamic lubrication elliptical point contacts transient analysis complex combined contact kinematics |
| url | https://www.mdpi.com/2075-4442/8/8/81 |
| work_keys_str_mv | AT gajarajansivayogan transientanalysisofisothermalelastohydrodynamicpointcontactsundercomplexkinematicsofcombinedrollingspinningandnormalapproach AT raminrahmani transientanalysisofisothermalelastohydrodynamicpointcontactsundercomplexkinematicsofcombinedrollingspinningandnormalapproach AT homerrahnejat transientanalysisofisothermalelastohydrodynamicpointcontactsundercomplexkinematicsofcombinedrollingspinningandnormalapproach |