Fault features analysis of cracked gear considering the effects of the extended tooth contact

Ma, Hui; Pang, Xu; Feng, Ranjiao; Song, Rongfang; Wen, Bangchun

doi:10.1016/j.engfailanal.2014.11.018

Cited by 161 publications

(57 citation statements)

References 35 publications

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“…The gears and contact effect are modeled by 2D plane strain elements and 2D line-to-line contact elements, respectively Wang [53] FEM with contact elements A FE model of the cracked gear pair based on the elastic-plastic fracture mechanics is developed Ma et al [54] FEM with contact elements Influences of extended tooth contact and the gear-body weakening caused by tooth root crack are considered Ma et al [55] FEM with contact elements Conventional photoelasticity technique is adopted to experimentally measure the change of TVMS of a cracked gear pair Note: AM denotes the analytical method, FEM the finite element method and PEP the potential energy principle. For all analytical methods, the gear tooth is assumed as a variable cross-section cantilever beam.…”

Section: References Methods Descriptionsmentioning

confidence: 99%

“…To solve this problem, Wang [53] presented a FE model of a cracked gear pair based on the elasticplastic fracture mechanics. Considering the influences of the extended tooth contact and root crack of the gear tooth, Ma et al [54] established a FE model of a gear pair using ANSYS software (see Fig. 17) to calculate TVMS of the gear pair with different crack depths, and analyzed the weakening effects of tooth root crack on the gear-body stiffness.…”

Section: Fe Models With Contact Elementsmentioning

confidence: 99%

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Review on dynamics of cracked gear systems

Zeng

Feng

et al. 2015

Engineering Failure Analysis

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274

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Section: References Methods Descriptionsmentioning

confidence: 99%

Section: Fe Models With Contact Elementsmentioning

confidence: 99%

Review on dynamics of cracked gear systems

Zeng

Feng

et al. 2015

Engineering Failure Analysis

Self Cite

274

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“…Curve of magnitude-frequency characteristic of the main resonance of the coal cutter gear system with different frequencies of the second force eling [21] approaches. Although the literature reports variant dynamic models of cracked gear systems, most models employed single-frequency excitation [7].…”

Section: Figmentioning

confidence: 99%

The nonlinear dynamics response of cracked gear system in a coal cutter taking environmental multi-frequency excitation forces into consideration

Zhu

et al. 2015

Nonlinear Dyn

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The normal operation of gear systems ensures the power transmission in coal cutters. Due to harsh work environment, the gears in coal cutters are prone to crack. By analyzing the gear dynamic response, useful crack detection indicators could be obtained. The literature review indicates that most of the gear dynamic models have been built with singlefrequency excitation, but very limited work has considered multi-frequency excitations. The coal cutter gear systems are always subjected to multi-frequency excitations. Hence, a nonlinear gear dynamic model taking multi-frequency excitations into account was established in this work. A meshing stiffness coefficient was defined to model the crack fault influence on the gear model. The amplitude-frequency of the model main resonance was analyzed by means of multi-scale method, and the model dynamic response was calculated by the incremental harmonic balance method. Numerical simulation results show that the dynamic response of the presented gear model provided strong chaotic characteristics and the chaotic degree of the gear dynamics increased with the deterioration of the crack level. Experimental validation was carried out on a real gearbox, and the analysis results were consistent with the simulations. Hence, the simulation and experimental analysis demonstrates that the multi-frequency excitation-based gear dynamic model was more correct than the single-frequency excitation-based model in representing the system dynamics.

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“…As diagnostic parameters RMS and Excess were used, mesh stiffness was calculated using potential energy. Ma et al [17] investigated a phenomenon of cracked teeth when the incoming tooth pair enters contact earlier than the theoretical start of contact, and the outgoing tooth pair leaves contact later than the theoretical end of contact. It was found that for simulated signals, sideband frequencies, statistical features and instantaneous energy can all reflect the fault features of the cracked gear.…”

Section: Science and Technologymentioning

confidence: 99%