Mechanics & Industry
Volume 21, Number 3, 2020
|Number of page(s)||16|
|Published online||03 April 2020|
A multiobjective optimization of journal bearing with double parabolic profiles and groove textures under steady operating conditions
College of Power and Energy Engineering, Harbin Engineering University, Harbin, PR China
2 Chongqing Yuejin Machinery Plant Co., Ltd, Chongqing, PR China
* e-mail: firstname.lastname@example.org
Accepted: 20 February 2020
The double parabolic profiles can help journal bearing to reduce bushing edge wear, but it also reduces load carrying capacity and increases friction loss. To overcome these drawbacks, in this study, a multiobjective optimization of journal bearing with double parabolic profiles and groove textures is researched under steady operating conditions using Taguchi and grey relational analysis methods. Firstly, a lubrication model with journal misalignment, elastic deformation, asperity contact, thermal effect is established and formation cause of drawbacks is illustrated. Then, an orthogonal test with considering six factors, i.e., groove number, groove depth, groove length, axial width of double parabolic profiles, radial height of double parabolic profiles and groove location is conducted, meanwhile the effects and significances of each factor on response variables are revealed. Finally, an optimal parameters combination of six factors is determined by grey relational analysis, which gives maximum load carrying capacity and minimum friction loss. Overall, this study may give guidance on journal bearing design to enhance its tribological performance.
Key words: Double parabolic profiles / Groove textures / Load carrying capacity / Friction loss / Multiobjective optimization
© AFM, EDP Sciences 2020
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