Simulation of fatigue failure on tooth flanks in consideration of pitting initiation and growth

Weibring, Max; Gondecki, Leonard; Tenberge, Peter

doi:10.1016/j.triboint.2018.10.029

Cited by 46 publications

(19 citation statements)

References 11 publications

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“…Although impressive progress has been achieved on gear micropitting, and numerous factors have been considered in gear contact fatigue analysis [129][130][131], the micropitting mechanism still has not been fully revealed. The combined consideration of materials, structures, working condition, chemistry factors, etc., is much more necessary to numerical and experimental gear micropitting investigations for both the academic study and the industry.…”

Section: Discussionmentioning

confidence: 99%

A Review on Micropitting Studies of Steel Gears

Liu

Zhu

et al. 2019

Coatings

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With the mounting application of carburized or case-hardening gears and higher requirements of heavy-load, high-speed in mechanical systems such as wind turbines, helicopters, ships, etc., contact fatigue issues of gears are becoming more preponderant. Recently, significant improvements have been made on the gear manufacturing process to control subsurface-initiated failures, hence, gear surface-initiated damages, such as micropitting, should be given more attention. The diversity of the influence factors, including gear materials, surface topographies, lubrication properties, working conditions, etc., are necessary to be taken into account when analyzing gear micropitting behaviors. Although remarkable developments in micropitting studies have been achieved recently by many researchers and engineers on both theoretical and experimental fields, large amounts of investigations are yet to be further launched to thoroughly understand the micropitting mechanism. This work reviews recent relevant studies on the micropitting of steel gears, especially the competitive phenomenon that occurs among several contact fatigue failure modes when considering gear tooth surface wear evolution. Meanwhile, the corresponding recent research results about gear micropitting issues obtained by the authors are also displayed for more detailed explanations.

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Section: Discussionmentioning

confidence: 99%

A Review on Micropitting Studies of Steel Gears

Liu

Zhu

et al. 2019

Coatings

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“…Due to the influence of the maximum stress, the subsurface layer at the gear pitch line becomes the weakest position on the gear tooth, and this position is also considered to be the most likely position for the initiation of fatigue cracks on the tooth surface. Especially when there are inclusions and defects in the microstructure of the gear material, initial cracks are more likely to occur (Weibring et al, 2019). After the initial crack occurs, the continuous working load will further cause the crack to continue to develop inside and on the surface of the tooth body.…”

Section: Failure Mode Of Pom Gear Under Oil Lubricationmentioning

confidence: 99%

Loading capacity of POM gear under oil lubrication

ZHONG

Song

Liu

et al. 2022

JAMDSM

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As one of the most common polymer materials, POM gear has been widely applied in automatic transmission boxes, intelligent house devices, etc. Though the mechanical properties of POM material have been extensively studied, the loading capacity and failure mechanism of POM gear still require to be explored. This paper experimentally investigates the loading capacity of medium-module POM gears based upon the durability test under various loading conditions. The POM gears are mated with 18CrNiMo7-6 steel pinions. The tooth wear, surface roughness, and tooth profile evolution are recorded. In the experimental results, the contact fatigue failure was observed in tooth flank of the POM gear with medium modulus under oil lubrication conditions, including tooth surface pitting and fatigue cracks. And according to the experimental durability life data, the contact fatigue S-N curve of POM gear is fitted.

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“…The faults may generate serious economic losses and even casualties. Specifically, damages (e.g., pitting, cracking, and spalling) on the gear teeth are the main causes of system failure, and they usually impact the dynamic characteristics of gear devices [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics of a Gear System with Double-Teeth Spalling Fault and Its Fault Feature Analysis

et al. 2020

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Tooth spalling is one of the most destructive surface failure models of the gear faults. Previous studies have mainly concentrated on the spalling damage of a single gear tooth, but the spalling distributed over double teeth, which usually occurs in practical engineering problems, is rarely reported. To remedy this deficiency, this paper constructs a new dynamical model of a gear system with double-teeth spalling fault and validates this model with various experimental tests. The dynamic characteristics of gear systems are obtained by considering the excitations induced by the number of spalling teeth, and the relative position of two faulty teeth. Moreover, to ensure the accuracy of dynamic model verification results and reduce the difficulty of fault feature analysis, a novel parameter-adaptive variational mode decomposition (VMD) method based on the ant lion optimization (ALO) is proposed to eliminate the background noise from the experimental signal. First, the ALO is used for the self-selection of the decomposition number K and the penalty factor â of the VMD. Then, the raw signal is decomposed into a set of Intrinsic Mode Functions (IMFs) by applying the ALO-VMD, and the IMFs whose effective weight kurtosis (EWK) is greater than zero are selected as the reconstructed signal. Combined with envelope spectrum analysis, the de-nosing ability of the proposed method is compared with that of the method known as particle swarm optimization-based variational mode decomposition (PSO-VMD), the fixed-parameter VMD, the empirical mode decomposition (EMD), and the local mean decomposition (LMD), respectively. The results indicate that the proposed dynamic model and background elimination method can provide a theoretical basis for spalling defect diagnosis of gear systems.

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Simulation of fatigue failure on tooth flanks in consideration of pitting initiation and growth

Cited by 46 publications

References 11 publications

A Review on Micropitting Studies of Steel Gears

A Review on Micropitting Studies of Steel Gears

Loading capacity of POM gear under oil lubrication

Dynamic Characteristics of a Gear System with Double-Teeth Spalling Fault and Its Fault Feature Analysis

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