A numerical study on the performance of straight bevel gears operating under mixed lubrication regime

Ghahnavieh, Aref Bahrami; Akbarzadeh, Saleh; Mosaddegh, Peiman

doi:10.1016/j.mechmachtheory.2014.01.005

Cited by 25 publications

(20 citation statements)

References 14 publications

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“…Bevel gears are among the key elements in a power transmitting system with intersecting axes. [28] In the past, researches in this area were limited, the gears were considered as having a high efficiency, with a reduced frictional loss. But in the current conditions of the global economy development, the means of obtaining energy from renewable sources and energy saving has become important issues thus researches are being geared towards.…”

Section: Gearbox (Bevel Gears)mentioning

confidence: 99%

See 1 more Smart Citation

Prediction of the Mechanical Power in Wind Turbine Powered Car UsingVelocity Analysis

Kassem¹,

Çamur²,

Alghazali³

2018

AJSET

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Savonius is a drag type vertical axis wind turbine. Savonius wind turbines have a low cut-in speed and can operate at low wind speed. It is suitable for small scale power generation, such as individual domestic installations. In this paper, investigation into the relationship between the type of Savonius rotor, the torque and the mechanical power generated was carried out. Also an illustration on how the type of rotor plays an important role in the prediction of mechanical power of wind turbine powered car. The main purpose of this paper is to predict and investigate the aerodynamic effects by means of velocity analysis on the performance of a wind turbine powered car by converting the wind energy to mechanical energy to overcome load applied on the rotating main shaft. The predicted result based on theoretical analysis is compared with experimental results obtained from literature. Prediction of the torque was done at a wind speed of 4 m/s, and an angular velocity of 130 RPM according to meteorological statistics in Northern Cyprus.

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Section: Gearbox (Bevel Gears)mentioning

confidence: 99%

“…About 4.2% of the total energy is lost because of the rolling resistance. [28,33] c. Drivetrain Losses More than 5% of energy is lost in the transmission and other parts of the Drivetrain. Two main causes of transmission losses include the sliding contact of the gear and oil fling and windage.…”

Section: Energy Losses In a Vehiclementioning

confidence: 99%

Prediction of the Mechanical Power in Wind Turbine Powered Car UsingVelocity Analysis

Kassem¹,

Çamur²,

Alghazali³

2018

AJSET

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“…The effects of roughness surface on the characteristics of mixed EHD were studied, the results show that the effects of surface roughness on the contact area and load sharing are substantial [9]. Akbarzadeh et al [10][11][12][13] investigated the performance for the spur, helical and straight bevel gears in mixed EHL. In addition, combining the load sharing concept, the steady state wear in mixed lubricate contact was predicted and the effects of contact temperature on the steady-state wear were investigated [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

A Modified Wear Model Considering Contact Temperature for Spur Gears in Mixed Elastohydrodynamic Lubrication

Zhou

Xing

et al. 2020

Tribol Lett

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In this study, a modified wear model considering contact temperature for spur gears in mixed elastohydrodynamic lubrication (EHL) is proposed. The contact temperature consists of bulk temperature and flash temperature. The bulk temperature is determined by the thermal network model, whereas the flash temperature is estimated through the published method. The bulk temperature, which was rarely included in the previous works, substantially has a considerable influence on the tooth wear in mixed EHL. It is also found that the lower contact temperature contributes to the reduction of gear wear depth. Furthermore, the effects of gear basic geometrical parameter and operating parameter on wear depth are investigated. The results show that the wear depth decreases with the increased tooth width, module, pressure angle and rotational velocity but increases with the surface roughness and torque. It indicates that wear resistance of tooth surfaces can be enhanced by optimising the design parameters of gear drives.

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“…Ebrahimi Serest and Akbarzadeh applied this concept to helical gears [23]. Bahrami Ghahnavieh et al [24] used this method to investigate the effect of different parameters on the performance of bevel gears. Sojoudi and Khonsari [25] applied the load-sharing concept to the point contact problem.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Effect of Operating Conditions on the Running-in Behavior of Lubricated Elliptical Contacts

et al. 2015

Self Cite

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During running-in period, the friction coefficient and roughness profile of contacting elements experience drastic changes as a result of asperities deformation and wear. These transient changes affect the steady-state performance of mechanical elements such as gears, cam followers, and bearings. An experimental study on the effect of running-in operating conditions on the properties of a tribosystem is conducted using a pin-on-disk test rig. Curve-fit relationships are developed based on the experimental data to relate running-in duration, friction coefficient, and running-in weight loss to load, speed, and surface roughness. A model to predict the steady-state friction coefficient in the lubricated contact of pin and disk is developed based on the load-sharing concept.

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A numerical study on the performance of straight bevel gears operating under mixed lubrication regime

Cited by 25 publications

References 14 publications

Prediction of the Mechanical Power in Wind Turbine Powered Car UsingVelocity Analysis

Prediction of the Mechanical Power in Wind Turbine Powered Car UsingVelocity Analysis

A Modified Wear Model Considering Contact Temperature for Spur Gears in Mixed Elastohydrodynamic Lubrication

Experimental Investigation on the Effect of Operating Conditions on the Running-in Behavior of Lubricated Elliptical Contacts

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