Effects of Tooth Surface Crack Propagation on Meshing Stiffness and Vibration Characteristic of Spur Gear System

Yang, Lantao; Shao, Yimin; Jiang, Weiwei; Zhang, Luke; Wang, Li Ming; Xu, Jin

doi:10.3390/app11041968

Cited by 11 publications

(10 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Across various sources in the form of scientific articles, the method of deformation energy is considered to be the ideal analytical approach to modeling the stiffness of gears, as an internal excitation element of dynamical systems. The following findings are summarized from the authors' scientific contributions: Chen and Shao [1]; Saxena, Chouksey and Parey [2]; Sainsot, Velex and Duverger [3]; Cao, Chen and Jiang [5]; Yang et al [4] and last but not least Wan, Cao, Zi, He and He [6]. The second analytical model (AM2) for obtaining the course of mesh stiffness of gear is a model based on the mentioned publications.…”

Section: Analytical Model In Terms Of Deformation Energymentioning

confidence: 99%

“…There are different variants of analytical calculations. One of the variants of analytical modeling is the possibility of calculating the mesh stiffness by calculating the deformation energy of individual teeth of the gear, [1][2][3][4][5]. In this method, it is possible to take into account a large number of additional calculation conditions.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Determination of Mesh Stiffness of Gear—Analytical Approach vs. FEM Analysis

et al. 2021

View full text Add to dashboard Cite

This paper focuses on modeling the time-varying stiffness of spur gearings, which in dynamic models of transmission systems acts as an important element of the internal excitation of the dynamic system. Here are introduced ways to approach the modeling of gear stiffness using analytical calculations, which allow to model the course of mesh stiffness depending on its rotation. For verification of used analytical model were created five different gearings, and based on their geometry, the respective stiffness curves were analytically determined. Subsequently, a finite element simulation was performed in the Abaqus CAE software. Due to this software, it was possible to identify and objectively compare the stiffness curves and further determine the suitability of using the analytical model to determine the mesh stiffness of gearing.

show abstract

Section: Analytical Model In Terms Of Deformation Energymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Determination of Mesh Stiffness of Gear—Analytical Approach vs. FEM Analysis

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The TVMS model based on PEM plays a significant role in the study of the fault mechanism and dynamic analysis of gear cracks [13], wear [14], spalling, pitting [15], and other faults [16]. Yang et al [17] established a TVMS model with a gear tooth surface crack and analyzed the effect of the surface crack on the dynamic system. Shi et al [18] investigated the dynamic characteristics of the gear system with a double-teeth spalling fault.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics and Fault Mechanism of the Gear Tooth Spalling in Railway Vehicles under Traction Conditions

Lin

Chen

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

Gear tooth spalling is one of the inevitable fault modes in the long-term service of the traction transmission system of railway vehicles, which can worsen the dynamic load of the rotating mechanical system and reduce the operating quality. Therefore, it is necessary to study its fault mechanism to guide fault diagnosis scientifically. This paper established a planar railway vehicle model with a traction transmission system and an analytical time-varying meshing stiffness (TVMS) model of the spalling spur gear. Then, it analyzed the dynamic characteristics under traction conditions. The research found that the spalling length and depth affect the amplitude of the TVMS at the defect, while the width affects the range of the TVMS loss. The crest factor is the best evaluation indicator in ideal low-noise environments due to its sensitivity and linearity, but it is not good in strong-noise environments. Similarly, a time–frequency analysis tool cannot significantly detect the sideband characteristics that are excited by spalling. After high-pass filtering, the root mean square and variance exhibit excellent classification and vehicle speed independence in strong-noise environments. This research achievement can provide adequate theoretical support for feature selection and making strategies for fault diagnosis of railway vehicle gear systems.

show abstract

“…Gears are a critical power transmission element widely used in the fields of automotive, aviation, wind power, machinery, and domestic equipment. [1][2][3] As the modern industry continues to evolve, new gear designs are expected to reduce vibration and noise and provide higher load-carrying capacity, long fatigue life, and low weight. [4][5][6][7] However, gears may produce faults due to excessive service loads, manufacturing and installation errors, insufficient lubrication, fatigue, etc., and are prone to failure.…”

Section: Introductionmentioning

confidence: 99%

“…13 In this regard, the TVMS of a gear pair and its dynamic response will change if tooth root crack damage occurs. 33,34 Yang et al 3 examined the impact of surface crack propagation on the gear systems’ TVMS and dynamic response. To this end, the researchers developed a model for calculating the TVMS and established a six-degrees-of-freedom dynamic model of a spur gear system.…”

Section: Introductionmentioning

confidence: 99%

Influence of tooth root cracks on the mesh stiffness of asymmetric spur gear pair with different backup ratios

Doǧan

Kalay

Karpat

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

Gears are critical machine elements that transmit power and motion in diverse implementation fields. Over time, gears may produce a series of faults due to harsh operating conditions, fatigue, manufacturing errors, etc., leading to severe performance degradation. During the meshing process, the stiffness of a single tooth controls the load sharing, vibration, and noise characteristics of a geared system. An undetected fault could decrease the gear stiffness and thus may lead to a fatal breakdown, substantial economic losses, or even human casualties in safety-critical applications such as helicopters, high-speed trains, and wind turbines. Hence, the accurate quantification of the gear stiffness emerges as an important research area to obtain reliable gear designs. With this in mind, the asymmetric tooth concept offers superior bending strength, fatigue propagation life, and the ability to lessen vibration over the standard (symmetric) designs in applications where unidirectional loadings are predominant. This study investigates the influence of tooth root cracks on the single-tooth and meshing stiffness characteristics of the standard and asymmetric involute spur gears. To this end, the numerical crack propagation paths obtained in our previous works were introduced to the created 3D CAD geometries. Subsequently, the single tooth stiffness of both healthy and cracked (2 5%-50%-75%-100%) gears was calculated through the ANSYS® Workbench, and the time-varying mesh stiffness was obtained. The present study evaluated the effects of backup ratio and the tooth asymmetry on the spur gears’ meshing stiffness characteristics simultaneously and further expanded the scope of the research work. The results indicated that the single tooth stiffness and mesh stiffness could be improved by 35% and 22%, respectively, as the drive side pressure angle increased from 20° to 35°. It has been noted that the gear stiffness decreased as the crack level increased, while the increment of the backup ratio further increased the reduction in the stiffness. The findings could provide significant outputs for a better understanding of the influence of tooth asymmetry on the gear dynamics characteristics, life prediction, and early fault diagnosis.

show abstract

Effects of Tooth Surface Crack Propagation on Meshing Stiffness and Vibration Characteristic of Spur Gear System

Cited by 11 publications

References 32 publications

Determination of Mesh Stiffness of Gear—Analytical Approach vs. FEM Analysis

Determination of Mesh Stiffness of Gear—Analytical Approach vs. FEM Analysis

Dynamic Characteristics and Fault Mechanism of the Gear Tooth Spalling in Railway Vehicles under Traction Conditions

Influence of tooth root cracks on the mesh stiffness of asymmetric spur gear pair with different backup ratios

Contact Info

Product

Resources

About