Investigations on Drive Axle Thermal Behaviour: Power Loss and Heat-Transfer Estimations

Fossier, Charlotte; Barday, Dennis; Changenet, Christophe; Ville, Fabrice; Berier, Vincent

doi:10.4271/03-11-01-0004

Cited by 12 publications

(6 citation statements)

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“…The TNM is used for heat balance and temperature calculation of gearboxes. For example, the TNM was applied by Funck [12], Changenet et al [3] and Liu et al [23] on spur gears; Monz [27] and Paschold et al [32] on worm gears; Fossier et al [11] on hypoid gears; Chen et al [4], Durand de Gevigney et al [8] and Xiao et al [47] on planetary gears and Sucker [43] on crossed helical gears. All these studies refer to steady state operation conditions, where it is:…”

Section: Temperature Calculationmentioning

confidence: 99%

Calculating component temperatures in gearboxes for transient operation conditions

Paschold

Sedlmair

Lohner

et al. 2021

Forsch Ingenieurwes

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The knowledge of component temperatures during transient operation conditions is essential for an optimal design of a gearbox. This is because critical peak temperatures limit the transferable power as well as the load capacity. Moreover, understanding the thermal behavior of the gearbox is key to improving its efficiency. Therefore, the Thermal Network Method (TNM) of the calculation program WTplus was extended to calculate component temperatures in gearboxes for transient operation conditions. Specifically, the TNM considers the component masses and specific heat capacities of each node modelling the gearbox structure. This enables the algorithm to compute a corresponding system of differential equations and thus determine the temperature change over time. Therefore, WTplus can be used to identify critical gearbox component temperatures during load cycles. The applied method was validated with measurements collected at the FZG gear efficiency test rig.

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Section: Temperature Calculationmentioning

confidence: 99%

Calculating component temperatures in gearboxes for transient operation conditions

Paschold

Sedlmair

Lohner

et al. 2021

Forsch Ingenieurwes

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“…According to the work of Laruelle et al. 13 and Fossier et al., 36 the formula of the dimensionless churning drag torque reads …”

Section: Analytical Relationshipmentioning

confidence: 99%

“…According to the work of Laruelle et al 13 and Fossier et al, 36 There is little literature on bevel gear windage losses, and for now there is no formulation for the dimensionless drag torque. In order to study the influence of geometrical parameters and operating conditions, the same test rig as that for the splash losses was used.…”

Section: Analytical Relationshipmentioning

confidence: 99%

“…Values are averaged on speeds and oil immersion. Figure 17 shows the evolution of experimental and theoretical torque from ISO 14179-1 24 and 2, 27 Jeon, 28 and Fossier, 36 for a case of application of a helicopter tail gearbox. The standard ISO 14179-1 24 diverges from experience mainly because the model is based on windage investigation and then adapted to splash lubrication: the torque evolution with speed diverges from the experimental one.…”

Section: Development Of An Oil Immersion Evolution Modelmentioning

confidence: 99%

“…The deviation with experimental values increases for high speeds, when windage effect becomes non-negligible. The model of Fossier 36 is accurate at low speed when operating conditions are not characterized by a great immersion decrease. For the same case of application, the new formula proposed in the present paper is presented in Figure 18.…”

Section: Development Of An Oil Immersion Evolution Modelmentioning

confidence: 99%

See 2 more Smart Citations

Churning losses of spiral bevel gears at high rotational speed

Quiban

Changenet

Marchesse

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part J:

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In the present study, no-load losses of different splash lubricated spiral bevel gears were measured. The authors used a specific test rig, and a set of gears, to investigate churning losses at higher tangential speeds: up to 60 m/s. An uncommon behavior of the drag torque was highlighted: the torque increased with the rotational speed until a local maximum was reached; then the torque decreased and a local minimum was noticed; at higher rotational speed the torque increased. The torque decrease seems to be linked with a windage phenomenon, which becomes non-negligible at such speeds. In this work, efforts were made to characterize this reduction of gear immersion depth in order to be able to predict no-load losses. It was found that the evolution of oil immersion was linked to a Froude number. Finally a new analytical model of no-load losses was developed for churning losses combined with windage effects. This formulation takes into account several parameters such as rotational speed, gear immersion depth, oil properties, and gear geometrical parameters.

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Development of an analytical model to predict the churning power losses of an orthogonal face gear

Zhu

Dai

2023

Engineering Science and Technology, an International Journal

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Investigations on Drive Axle Thermal Behaviour: Power Loss and Heat-Transfer Estimations

Cited by 12 publications

References 0 publications

Calculating component temperatures in gearboxes for transient operation conditions

Calculating component temperatures in gearboxes for transient operation conditions

Churning losses of spiral bevel gears at high rotational speed

Development of an analytical model to predict the churning power losses of an orthogonal face gear

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