Study on dynamic load-sharing characteristics of face gear dual-power split transmission system with backlash, support and spline clearance

Hao, Dong; Zhang, Hao Qin; Zhao, Xiao Long; Duan, Ling

doi:10.5194/ms-12-573-2021

Cited by 7 publications

(5 citation statements)

References 8 publications

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“…The reaction force of the spline shaft acting on the sun gear is shown in Fig. 6 30 . When 0 ≤ R s < R 1 , the internal and external spline do not generate relative slip, and the supporting reaction force is provided by the bending deformation of the spline shaft.…”

Section: Load Sharing Structure Floating Splinementioning

confidence: 99%

The effect of floating spline parameter on the dynamic characteristic of encased differential planetary gear train

Che,

Yu,

Zhang

et al. 2024

Sci Rep

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The load sharing performance of encased differential planetary system has a great impact on the operating performance and service life of the transmission system of the coaxial high speed helicopter. In order to improve the load-sharing performance of the gear pair, the influence of different floating spline structural parameters on the load sharing characteristics of the system was studied. Considering the manufacturing error, installation error, time varying meshing stiffness and other factors, the Lagrange equation is used to construct the dynamic model of encased differential planetary gear train with floating spline structure. The effects of input torque, spline clearance, spline shaft stiffness and spline friction coefficient on the load sharing performance of gear pairs were analyzed. The results show that the differential stage system has a better load sharing performance than the encased stage system. The increase of input torque helps to improve the load sharing performance of the system, and the improvement of the encased stage system is more obvious. The floating spline of sun gear of the encased stage has a greater impact on the load sharing performance of the system. Furthermore, increasing the floating spline clearance, reducing spline shaft stiffness or increasing the friction coefficient of the spline can improve the load sharing performance of the system overall.

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Section: Load Sharing Structure Floating Splinementioning

confidence: 99%

The effect of floating spline parameter on the dynamic characteristic of encased differential planetary gear train

Che,

Yu,

Zhang

et al. 2024

Sci Rep

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“…The gear transmission error is a significant parameter in the dynamic model, exerting substantial influence on dynamic behavior [26]. It is typically regarded as a constant value [27].…”

Section: Stochastic Equivalent Meshing Error Based On the Monte Carlo...mentioning

confidence: 99%

Effect of Floating Support Parameters on the Load-Sharing Performance of EDPGS Based on Mathematical Statistical Methods

Che,

Zhu

2024

Machines

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The encased differential planetary gear system (EDPGS) allows power to be distributed among multiple output paths, enhancing efficiency and reducing weight. Uniform load distribution ensures stable system operation and prolongs service life. However, stochastic manufacturing errors leading to uneven load distribution pose challenges in engineering practice. To investigate the impact of floating support parameters on the load-sharing performance within an acceptable tolerance band, a dynamic model of the EDPGS considering time-varying meshing stiffness and random errors is established using the Monte Carlo method. This study employs the orthogonal experimental design method to analyze the effects of floating support stiffness and clearance on the load-sharing characteristics. The findings indicate that a larger sample size leads to a probability distribution of load-sharing coefficients closer to the Gaussian distribution, with minimal influence on the expectation and variance. Furthermore, this study highlights the significant influence of floating structure parameters on load-sharing characteristics in the encased stage systems compared to the differential stage. Decreasing floating support stiffness or increasing floating clearance proves beneficial in enhancing the load-sharing performance of the system.

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“…This is because a sideband consists of many frequencies, including the mesh frequency and its multiplier, and the rotation frequency of each component and their multipliers. These frequencies have research value, such as a working state diagnosis, resonance point identification, and the dynamic vibration reduction design of a gear transmission system [43,44], and these can be used to diagnose the working states of the carrier, planet shaft, and gear. Figure 11 shows the meshing force frequency domain curve of the sun gear and planet gear 1 in the z direction.…”

Section: Vibration Characteristics Analysis Of Planetary Gear Train S...mentioning

confidence: 99%

The Non-Linear Excitation Load-Sharing Method of a High-Powered Nuclear Planetary Gear Train

Wei,

Dong,

Wang

et al. 2023

Processes

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The paper primarily employs the 3D calculation method of the helical gear-meshing line and meshing position, in addition to the traditional method of the gear-meshing stiffness calculation. This analysis and correction of load-sharing are beneficial for improving the assembly process of high-powered critical equipment. The dynamic models of rigid–flexible coupling, velocity–torque, and the meshing force of planetary gear trains in nuclear power plants are established based on the principles of gear dynamic characteristics. Based on an analysis of the vibration characteristics of a planetary gear train, a load-sharing method for the planetary gear train is proposed. This uniform load-sharing method is explored under different modification values to provide a reference for load-sharing research on high-powered key equipment. In this paper, a dynamic simulation analysis of the gearbox system is conducted, using virtual prototype software to study the load-sharing performance of the planetary gear system. Furthermore, via a vibration frequency analysis of the gear mesh force, the causes of planetary gear train vibration are discussed, particularly their impact on planetary load. This provides a basis for the assembly process of a nuclear power circulation pump gearbox, ensuring that the gearbox for the circulation pump has a longer life that meets the 40-year service life requirement, and provides a foundation for the study of planetary load characteristics.

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Study on dynamic load-sharing characteristics of face gear dual-power split transmission system with backlash, support and spline clearance

Cited by 7 publications

References 8 publications

The effect of floating spline parameter on the dynamic characteristic of encased differential planetary gear train

The effect of floating spline parameter on the dynamic characteristic of encased differential planetary gear train

Effect of Floating Support Parameters on the Load-Sharing Performance of EDPGS Based on Mathematical Statistical Methods

The Non-Linear Excitation Load-Sharing Method of a High-Powered Nuclear Planetary Gear Train

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