Tooth faults detection of planetary gearboxes based on tooth root strain signal of ring gear

Zhang, Xiaodong; Niu, Hang; Chao-zhen, Hou; Marcal, Antonio; Di, Fagui

doi:10.1016/j.measurement.2020.108685

Cited by 16 publications

(5 citation statements)

References 19 publications

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“…40 Apart from the vibration signals, researchers have also developed models for condition monitoring and fault diagnosis of planetary gears by using TE signals. 41,42 Although the mesh force cannot be directly measured, some investigations still studied the mesh force behavior 43,44 because an understanding of gear dynamics and an accurate evaluation of the mesh force are essential for the design of planetary gears with low vibration and low noise. 44 Therefore, a comprehensive estimation of TE and mesh force is necessary both in the time domain and frequency domain when studying the planetary gears involved in this paper.…”

Section: Discussionmentioning

confidence: 99%

Distinctive behaviors of mesh force and transmission error in mesh stiffness model of spur planetary gear system considering elastic ring gear

Wan

Zhou

et al. 2022

Advances in Mechanical Engineering

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In a planetary gear set with an elastic ring gear, there are several pairs of flexible internal meshing simultaneously. The interactions between them are often ignored when considering their mesh stiffness. This study is devoted to investigating the effect of the number of equally spaced planets and the number of fixed supports of ring gear on mesh force and loaded-static transmission error (LSTE) as well as related mesh stiffness through a 2D system-level finite element model. This model is first validated by the comparison with the traditional potential energy method (PEM) when the ring gear is fully fixed. Then taking the number of planets and fixed supports as variables, 16 sets of analyses are conducted. Mesh force and LSTE extracted from the model, together with the mesh stiffness derived by them, are analyzed and concluded in the time domain and/or frequency domain. It is demonstrated that the number of planets has a certain impact on the ring-planet mesh stiffness. In terms of the number of planets and fixed supports, planetary gear systems can be classified into three categories according to the distinctive behaviors of mesh force and LSTE in the time domain and frequency domain.

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Section: Discussionmentioning

confidence: 99%

Distinctive behaviors of mesh force and transmission error in mesh stiffness model of spur planetary gear system considering elastic ring gear

Wan

Zhou

et al. 2022

Advances in Mechanical Engineering

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“…Zhang et al introduce a methodology for detecting tooth faults in planetary gearboxes by analyzing the strain signals from the tooth root of the ring gear. The time domain of the measured strain signals clearly exhibits the theoretical fault characteristics [16]. Yoon, J et al propose a novel approach that employs a solitary piezoelectric strain sensor to diagnose faults in planetary gearboxes.…”

Section: Introductionmentioning

confidence: 99%

Durable Testing and Analysis of a Cleaning Sieve Based on Vibration and Strain Signals

Ma,

Zhang,

Zhang

et al. 2023

Agriculture

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Cleaning is one of the most important steps in the harvesting process, and the prolonged and high-load operation of the vibrating sieve can decrease its reliability. To uncover the structural flaws of the cleaning sieve in the crawler combine harvester and establish a foundation for quality inspection, this paper proposes a method for durability testing and analysis using vibration and strain signals. Via the modal analysis of the cleaning sieve, the most susceptible areas for fault signals are identified. Subsequently, a specialized test rig exclusively designed for the examination of the durability of the cleaning sieve is constructed. After following 96 h of uninterrupted operation, the vibration plate of the cleaning sieve sustains damage, resulting in atypical noise. A signal analysis reveals that the primary vibration signal of the cleaning sieve primarily consists of a fundamental frequency of 5 Hz, corresponding to the driving speed, as well as a frequency doubling signal of 50 Hz. After the occurrence of damage, the peak amplitude of the received vibration signal increases by over 86.3%. Furthermore, the strain gauge sensor situated on the support plate of the rear sieve detects anomalous signals with frequencies exceeding 300 Hz, which are accompanied by a considerable rise in the power spectral density. This research has significant importance for enhancing the service life of the cleaning sieve and optimizing the overall machine efficiency.

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“…Gear mating dynamic analysis has been extensively investigated and reported. Zhang et al [23] built a finite element (FE) model to determine the fault features in the time domain of the ring gear strain signal caused by abnormal mesh force. Wu et al [24] proposed an analytical-FE method to calculate the time-varying mesh stiffness (TVMS) of gear tooth crack.…”

Section: Introductionmentioning

confidence: 99%

“…Fatigue fracture of gear teeth is one of the most dangerous failure forms of gears. Existing research on gear tooth breakage mainly focuses on the influence of fault on gear parameters [23] and system dynamic characteristics [24][25][26]. Chaari et al [23] put forward the calculation method of broken tooth gear stiffness and obtained the influence of a broken tooth on gear meshing stiffness.…”

Section: Introductionmentioning

confidence: 99%

“…Existing research on gear tooth breakage mainly focuses on the influence of fault on gear parameters [23] and system dynamic characteristics [24][25][26]. Chaari et al [23] put forward the calculation method of broken tooth gear stiffness and obtained the influence of a broken tooth on gear meshing stiffness. Ma and Chen [24] considered the influence of slight imbalance caused by broken teeth on dynamic gear characteristics.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dynamic Analysis and Fault Diagnosis for Gear Transmission of a Vibration Exciter of a Mine-Used Vibrating Screen under Different Conditions

Cheng

Cao

et al. 2022

Applied Sciences

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The helical gear pair of a box-type vibration exciter of a mine-used linear vibrating screen is subjected to complex excitation and prone to broken tooth failures. At present, investigation regarding the difference and particularity between gear transmission in vibrating screens (i.e., vibration machinery) and that in rotating machinery is still a challenge, which is the key to revealing the performance and failure mechanism of gear transmission in the premise of application to vibrating screens. In order to intuitively display the peculiarity of gear transmission on the exciter, an innovative virtual prototype model of a gear pair of a vibrating screen exciter is proposed. This model considers the effects of internal and external excitation, such as the friction and lubrication of the gear, strong alternating load produced by a large eccentric block, the reciprocating motion of the screen body, the large clearance of bearing and so on, and its correctness is verified. Based on the comparison, the inducement for the high fatigue rate of exciter gears is revealed. Models of a vibrating screen’s excitation system with different degrees of broken teeth are also established, and tooth fault features are proposed for fault detection. Sensitive indicators for the degradation degree of tooth damage are put forward, and the monitoring strategy is presented that with the increase of damage degree, the waveform index and pulse index of axial vibration acceleration increase. The analysis results provide powerful support for the optimal design of the vibrating screen’s exciter gears and fault diagnosis.

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Tooth faults detection of planetary gearboxes based on tooth root strain signal of ring gear

Cited by 16 publications

References 19 publications

Distinctive behaviors of mesh force and transmission error in mesh stiffness model of spur planetary gear system considering elastic ring gear

Distinctive behaviors of mesh force and transmission error in mesh stiffness model of spur planetary gear system considering elastic ring gear

Durable Testing and Analysis of a Cleaning Sieve Based on Vibration and Strain Signals

Dynamic Analysis and Fault Diagnosis for Gear Transmission of a Vibration Exciter of a Mine-Used Vibrating Screen under Different Conditions

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