Dynamic Thermal Behavior of Two-Stage Gear Transmission System

Qiao, Shuai; Zhou, Jianxing; Zhang, Xiangfeng; Jiang, Hong; Shao, Yuan; Shen, Yong; Wang, Chenglong

doi:10.1007/s42417-021-00329-3

Cited by 4 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additional dynamic loads or impacts are generated during meshing because of the manufacture and assemble errors, elastic deformation of gear teeth, and time-varying characteristics of meshing stiffness accompanied by the alternate occurrence of single and double tooth mesh of gear pairs [23,24]. Dynamic load coefficient Kv is usually used to evaluate the deviation of the actual dynamic load from the theoretical load in the gear dynamics studies.…”

Section: Nonlinear Dynamics Under Standard Parametersmentioning

confidence: 99%

Nonlinear Dynamics of a Multi-shaft Gear System in Parameter-state Space

Yang

2023

Int. J. Automot. Mech. Eng.

View full text Add to dashboard Cite

A nonlinear dynamic model of a 12-degree-of-freedom multi-shaft gear system is established, which includes nonlinear factors such as gear backlash, bearing clearance and time-varying mesh stiffness. The bifurcation diagrams and the maximum dynamic load coefficient diagrams that describe the dynamics of the gear transmission system are simulated by using the Runge-Kutta method, combined with three Poincaré mapping. The mutual transition of the adjacent period one motion through the grazing bifurcation and saddle-node bifurcation form a hysteresis zone where two types of impact motion coexist. The correlation between the dynamic response and the gear backlash under the parameter-state space is investigated, and it is verified that the extreme parameter conditions lead to abnormal vibration phenomena such as jumping, mesh-apart and chaotic motion. The results show that, near the critical value of ω = 0.7164 for grazing bifurcation, the meshing gear pair undergoes a jump in relative micro-displacement and dynamic load, increasing system impact vibration and a decrease in transmission efficiency, which is an undesirable parameter interval. In the initial stage of dynamic designing, the backlashes can be selected through the internal characteristics and transition mechanism of periodic motions

show abstract

Section: Nonlinear Dynamics Under Standard Parametersmentioning

confidence: 99%

Nonlinear Dynamics of a Multi-shaft Gear System in Parameter-state Space

Yang

2023

Int. J. Automot. Mech. Eng.

View full text Add to dashboard Cite

show abstract

“…Fernandes et al used an FEM method for obtaining the temperature increase in polymer gears under different lubrication conditions based on the accurate calculation of power losses [15]. Qiao et al calculated the heat flux generated from friction process by solving the dynamic loads and vibration displacement and conducted FE analysis to obtain tooth surface temperature fields [16].…”

Section: Introductionmentioning

confidence: 99%

Thermal Analysis of Herringbone Gears Based on Thermal Elastohydrodynamic Lubrication Considering Surface Roughness

Chen

et al. 2021

Energies

View full text Add to dashboard Cite

To predict the temperature distribution of the tooth surface of a herringbone gear pair, a numerical method for the determination of frictional heat generation was proposed by establishing a thermal elastohydrodynamic lubrication (TEHL) model in the meshing zone taking surface roughness into account. According to the real micro topography of the tooth surface measured by a non-contact optical system and loaded tooth contact analysis, the friction coefficient was obtained by a TEHL analysis and then the heat generation in the contact zone was determined. With the combination of heat generation and heat dissipation analysis, the single tooth model of the herringbone gear pair due to the finite element method (FEM) was proposed and the steady-state temperature distribution of the tooth surfaces was predicted by FEM simulations. The simulation and the experimental results demonstrated good agreement, which verified the feasibility of the present numerical method.

show abstract

Study on the Influence of Heat on Deformation and Stress of Planetary Gear Transmission

Tian¹,

Qing²,

et al. 2023

J Fail. Anal. and Preven.

View full text Add to dashboard Cite

Dynamic Thermal Behavior of Two-Stage Gear Transmission System

Cited by 4 publications

References 10 publications

Nonlinear Dynamics of a Multi-shaft Gear System in Parameter-state Space

Nonlinear Dynamics of a Multi-shaft Gear System in Parameter-state Space

Thermal Analysis of Herringbone Gears Based on Thermal Elastohydrodynamic Lubrication Considering Surface Roughness

Study on the Influence of Heat on Deformation and Stress of Planetary Gear Transmission

Contact Info

Product

Resources

About