Nonlinear dynamics analysis of a gear system considering tooth contact temperature and dynamic wear

Yuan, Zhe; Fan, Fei; Bai, Xiaotian

doi:10.1177/16878132221121056

Cited by 3 publications

(2 citation statements)

References 33 publications

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“…In order to investigate the real load distribution on the tooth surface, this paper uses gear loaded tooth contact analysis (LTCA) based on the finite element method to calculate the w n distribution. If a meshing cycle (an angular pitch, 2π/z) is equally divided into N instantaneous positions, and M grid nodes along the tooth width direction, then after finite element calculation converges, the normal load on the current contact line at the ith instant meshing position can be obtained as in Equation (11), where the superscript "n" represents the normal direction.…”

Section: Semi-analytical Methods For Solving Tooth Surface Friction F...mentioning

confidence: 99%

“…Chen et al [10] studied the change in tooth backlash caused by the tooth bulk temperature, which in turn affects the dynamic performance of gear meshing in the shearer. Yuan et al [11] revealed that tooth surface contact temperature and dynamic wear will cause changes in the contact position on the line of action, thereby changing the dynamic characteristics of the gear system. Liu et al [12] developed three drums with different helical angles to investigate improved loading performance and studied the loading performance of the shearer drum.…”

Section: Introductionmentioning

confidence: 99%

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Research on Calculation and Optimization Methods for Tooth Flash Temperature and Meshing Power Loss of the Gear System in Drum Shearer

Bai,

Mao,

Guo

et al. 2024

Applied Sciences

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The operating conditions of the drum shearer are very complex, and its ranging arm gear system often suffers from gear scuffing and wear. Gear scuffing is caused by the adhesive wear, which is due to the instantaneous friction and flash temperature of the tooth surface, and the gear meshing power loss is also caused by tooth surface friction. In order to resist tooth scuffing and improve meshing efficiency of the transmission system, an improved semi-analytical tooth surface flash temperature calculation method was used. The tooth flash temperature status under various working conditions were analyzed in detail. Based on the mechanical model of the shearer drum picks, the load condition of the drum was analyzed. Under these load and boundary conditions, the misalignments of each gear pair in the ranging arm were calculated. The tooth surface load distribution was calculated under the gear misalignments, and then the theoretical tooth surface flash temperature and meshing power loss were determined. Next, the tooth micro-geometry was modified to reduce flash temperature and meshing power loss. The flash temperature distribution pattern of the optimized tooth surface was studied under various working conditions, and the meshing power loss was also obtained. Finally, experiments were conducted to verify the effects of the optimized tooth surface on the friction temperature rise and the effectiveness of the modification method. Tooth surface optimization aimed at reducing tooth surface flash temperature can also effectively reduce meshing power loss, which has a significant effect on gear anti-scuffing and energy saving.

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Section: Semi-analytical Methods For Solving Tooth Surface Friction F...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on Calculation and Optimization Methods for Tooth Flash Temperature and Meshing Power Loss of the Gear System in Drum Shearer

Bai,

Mao,

Guo

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

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Nonlinear performance of aerospace face gear-planetary gear transmission system under multi-factors including the effect of temperature

Bi,

Wang,

Chen

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part G:

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Face gear-planetary gear transmission system combines the advantages of both planetary and face gears. And has enormous advantages in the aerospace field. The meshing of gear teeth generates heat through friction, resulting in thermal deformation and affects nonlinear dynamic characteristics. Exploring the temperature effect on the nonlinear dynamics of the transmission system of face gear-planetary gear is of great significance. Considering the temperature variations effect and time-varying meshing stiffness, tooth side clearance as well as meshing error, a nonlinear dynamic model of the face gear-planetary gear system is established. The nonlinear dynamic characteristics of the system were described by maximum Lyapunov exponent diagram, phase diagram, bifurcation diagram et al. The findings indicate that the effect of temperature variations on the gear system is related to the values of the time-varying mesh stiffness coefficient and mesh damping ratio. When the mesh damping ratio is small, the influence of temperature changes on the bifurcation characteristics of the system is more obvious. As the time-varying mesh stiffness value increases, the temperature rise gradually stabilizes in the range of 15°C to 42°C; Under certain temperature changes, as the meshing damping ratio and time-varying meshing stiffness coefficient increase, the face gear planetary gear system gradually tends to stabilize.

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The Development and Experimental Validation of a Real-Time Coupled Gear Wear Prediction Model Considering Initial Surface Topography, Dynamics, and Thermal Deformation

Zhang,

Zhou,

Cui

et al. 2024

Machines

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Errors affect the actual meshing process of gears, alter the actual wear pattern of the tooth profile, and may even impact the overall service life of machinery. While existing research predominantly focuses on individual errors or a narrow set of factors, this study explores the combined effects of multiple errors on tooth profile wear. A comprehensive gear wear prediction model was developed, integrating the slice method, lumped mass method, Hertz contact model, and Archard’s wear theory. This model accounts for initial tooth surface topography, thermal deformation, dynamic effects, and wear, establishing strong correlations between gear wear prediction and key factors such as tooth surface morphology, temperature, and vibration. Experimental validation demonstrated the model’s high accuracy, with relatively small deviations from the observed wear. Initial profile errors (IPEs) at different positions along the tooth width result in varying relative sliding distances, leading to differences in wear depth despite a consistent overall trend. Notably, large IPEs at the dedendum and addendum can influence wear progression, either accelerating or decelerating the wear process over time.

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Nonlinear dynamics analysis of a gear system considering tooth contact temperature and dynamic wear

Cited by 3 publications

References 33 publications

Research on Calculation and Optimization Methods for Tooth Flash Temperature and Meshing Power Loss of the Gear System in Drum Shearer

Research on Calculation and Optimization Methods for Tooth Flash Temperature and Meshing Power Loss of the Gear System in Drum Shearer

Nonlinear performance of aerospace face gear-planetary gear transmission system under multi-factors including the effect of temperature

The Development and Experimental Validation of a Real-Time Coupled Gear Wear Prediction Model Considering Initial Surface Topography, Dynamics, and Thermal Deformation

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