Analysis of a double layer porous hybrid journal bearing considering the combined influence of wear and non-Newtonian behaviour of lubricant

Singh, A. K.; Sharma, Satish C.

doi:10.1007/s11012-020-01259-2

Cited by 17 publications

(5 citation statements)

References 42 publications

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“…Stiffness and damping coefficients for the HCPJB S in dimensionless form are calculated by determining the pressure derivatives with respect to X ¯ .1em j , Y ¯ j , Z ¯ j and X ˙ false¯ .1em j , Y ˙ false¯ j , Z ˙ false¯ j are expressed as 63,64 : …”

Section: Development Of Mathematical Modelmentioning

confidence: 99%

Influence of Percolation effect of additives on the Performance of Conical Textured Porous Hybrid Journal Bearing

Singh

Sharma

2022

Proceedings of the Institution of Mechanical Engineers, Part J:

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Textured bearing surfaces are widely used to reduce the friction in lubricated contacts. Besides the hydrodynamic pressure generated by the physical wedge, micro-textures act as micro-bearings and generates localized pressure. As a result, an additional load carrying capacity is generated. Further, micro-texture also serves as a lubricant reservoir, trapping wear debris and abrasive particles to improve the performance of tribo- pair. In this study, the effect of micro-textures and percolation effect of additives on the performance of hybrid conical porous journal bearings (HCPJBS) has been studied. The interactive effects of permeability parameter, spherical shaped micro-texture, semi cone angle and couple stress lubricant parameter considering the percolation effect parameter of additives on the performance of HCPJBS has been studied. FEM is used to numerically simulate the flow behaviour of couple stress lubricant in the bearing clearance space of a HCPJBS. The results shows that the HCPJBS operating with couple stress lubricant provides enhanced stability margin [Formula: see text] for lower values of permeability parameter [Formula: see text] and semi cone angle [Formula: see text].

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Section: Development Of Mathematical Modelmentioning

confidence: 99%

Influence of Percolation effect of additives on the Performance of Conical Textured Porous Hybrid Journal Bearing

Singh

Sharma

2022

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…The wear of clearance joint can cause vibration in mechanical system, leading to the generation of nonlinear phenomena, reducing the reliability of mechanical system, and seriously affecting the lifespan of system. 3,4 Therefore, it is significant to accurately present an effective model to predict the dynamic behavior of mechanism with wear clearance joint and conduct optimization design to reduce the impact of wear joint on mechanism.…”

Section: Introductionmentioning

confidence: 99%

Optimization research on dynamic behavior for mechanism with clearance joint and wear

Gao,

Fan,

Fan

2024

Proceedings of the Institution of Mechanical Engineers, Part C:

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This paper proposes a new optimization method by immune algorithm to reduce the impact of clearance joint and wear on the dynamics of mechanisms. Firstly, the dynamic model of crank-slider mechanism is built by Lagrange principle, and the wear phenomenon of clearance joint is characterized by Archard model. Then, the motion function reliability model of mechanism is presented by Stress-Strength interference (SSI) theory. Secondly, the optimization model of mechanism is derived and the surrogate model of the maximum contact force of clearance joint is indicated by response surface method (RSM), the immune algorithm is used to find the optimal solution of the surrogate model. Finally, the impact of wear and optimization on dynamic behavior, nonlinear dynamics, and motion function reliability of mechanism is investigated. The results show that wear clearance joint seriously affects the performance of mechanism. After optimization, the dynamic behavior and nonlinear dynamics of mechanism are improved, and the motion function reliability of mechanism is increased. This paper raises foundation for predicting the performance of mechanisms considering wear clearance joint, and provides theoretical guidance for optimization design and fault diagnosis of mechanisms.

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“…Additional research by Singh and Sharma [16] analysed the hybrid double layer porous journal bearing, uncovering an increase in stiffness and damping coefficient when micropolar fluid was employed in comparison to Newtonian fluid. Similarly, Srinivasan's [17] investigation revealed that the double layer had the effect of augmenting load capacity and frictional drag while simultaneously decreasing the coefficient of friction.…”

Section: Introductionmentioning

confidence: 99%

Effect of Double Porous Layer on Rough Step Slider Bearing Lubricated with Couple Stress Fluid

Anthony,

Elamparithi

2023

MMEP

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An investigation into how a double porous layer at the base impacts the performance of a Rayleigh step slider bearing lubricated with couple stress fluid is presented. The bearing is considered to be rough in nature. The modified Darcy's law is used to express the fluid pressure in the porous regions. To estimate the effect of surface roughness of the bearing the random variables pertaining to roughness parameters are analysed applying the Christen'S stochastic model. Applying Stokes' micro-continuum theory for couple stress yields an estimation of pressure via a modified Reynolds equation. Integrating over the bearing length the estimated film pressure, the load carrying capacity or lifting force, frictional force and coefficient of friction are incorporated into the study. A comparison to a single porous layer underscores the superior efficiency offered by the double porous layer. The study further elucidates the most favourable inlet film height and the optimal bearing length that facilitate maximum load carrying capacity. It is evident that the inlet film thickness can be reached the maximum up to 1.8 to 2 to obtain the maximum load carrying capacity of the bearing. The present study is compared with the existent results and that is more efficient for the current bearing model.

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Analysis of a double layer porous hybrid journal bearing considering the combined influence of wear and non-Newtonian behaviour of lubricant

Cited by 17 publications

References 42 publications

Influence of Percolation effect of additives on the Performance of Conical Textured Porous Hybrid Journal Bearing

Influence of Percolation effect of additives on the Performance of Conical Textured Porous Hybrid Journal Bearing

Optimization research on dynamic behavior for mechanism with clearance joint and wear

Effect of Double Porous Layer on Rough Step Slider Bearing Lubricated with Couple Stress Fluid

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