Fracture analysis on involute spline of large tunnel boring machine

Bian, Xin; Liu, Yuanrong; Zhang, Jitao

doi:10.1016/j.engfailanal.2022.106728

Cited by 12 publications

(6 citation statements)

References 7 publications

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“…This mainly includes standards of the American Gear Manufacturers Association, 20 mechanical design manuals, 21 and finite element method. 22,23 Due to the complex spline structure and stress characteristics in the working process, there is a deviation between the analytic study and the actual situation. [22][23][24] The formulas in the analytical method did not take into account the influence of uneven loading on the spline coupling.…”

Section: Introductionmentioning

confidence: 99%

“…22,23 Due to the complex spline structure and stress characteristics in the working process, there is a deviation between the analytic study and the actual situation. [22][23][24] The formulas in the analytical method did not take into account the influence of uneven loading on the spline coupling. Moreover, empirical constants in the formula need to be selected within a certain range, which inevitably introduces the subjective uncertainty.…”

Section: Introductionmentioning

confidence: 99%

“…The finite element analysis method can accurately capture the distribution response of field variables, and can more accurately obtain the stress characteristics of spline couplings. 21,22 It is necessary to use finite element method to analyze the stress state of the spline structure and determine whether its strength meets the design requirements.…”

Section: Introductionmentioning

confidence: 99%

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Failure analysis of spline coupling in an engine starting motor

Zhao

Liu

Xie

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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A failure analysis of starting motor is performed using analytical method and finite element method. The influence of external load and material properties on the stress characteristics were discussed. For 45 steel internal spline, the maximum contact stress is greater than the allowable contact stress. This may cause internal splines failure. The bending stress and shear stress are less than the corresponding allowable stress. To be specific, when the maximum 130 N/m applied to the spline coupling in finite element analysis, the contact stress, bending stress, and shear stress are 260, 144, and 40 MPa, respectively. The corresponding allowable contact stress, allowable bending stress, and allowable shear stress are 197, 400, and 200 MPa, respectively. The stress value at the addendum and side of internal spline is maximum, which has good consistency with the failure position of experimental test. In fact, the calculation results obtained from analytical study may have the possibility of underestimating or overestimating the true stress state. This is mainly because analytical study has certain limitations. Therefore, it is necessary to use finite element method to analyze the stress state of the spline structure under design loads and determine whether its strength meets the design requirements.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Failure analysis of spline coupling in an engine starting motor

Zhao

Liu

Xie

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…The spline coupling is widely used in the eld of mechanical transmission systems, which usually consists of two parts internal spline sleeve and main drive spline shaft. It is utilized the mechanism of the internal and external spline teeth meshing to convey large torque and load between two connected components [6][7]. When the main drive spline shaft rotated, the tooth roofs of the working side contacted the tooth roots of the internal spline sleeve, and the power owed from one to the other by the presence and interaction of teeth.…”

Section: Introductionmentioning

confidence: 99%

“…According to the survey data from the Southwest Research Institute in the United States, there are 174 splines per A-4 Skyhawk attack aircraft, the excellent performance of the spline has been widely accepted by the military [8]. However, due to the alternating load environment usually being harsh and complex, there are some factors that caused the spline coupling wear failure and shorten the service life, which includes material characters, load type, surface treatment, manufacturing/assembly errors, and so on [6][7][8]. In recent years, with the application of the new manufacturing technologies and higher hardness materials, the machining of the spline coupling has become increasingly di cult, especially for internal spline sleeves.…”

Section: Introductionmentioning

confidence: 99%

Analysis of electrochemical machining of involute internal spline by foamed metal cathode

Huang

Cong

Wang

et al. 2023

Int J Adv Manuf Technol

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The foamed metal material is novelty applied to manufacture the tool cathode to realize the electrochemical machining(ECM)of involute internal spline of di cult-to-cut materials. The porosity and electrolyte ow characteristics of the foamed brass cathode are analyzed. The geometric and mathematical model of involute internal spline by ECM is built, and the relevant electric eld simulations with different machining voltages, electrolyte types and cathode feed rates which directly determined the ECM results are conducted by COMSOL Multiphysics software. From the simulation results, the suitable process parameters are obtained and then carried out process experiments. The experiment results show that the foamed metal material can be used to fabricate the tool cathode for ECM. And when the machining voltage is 10 V, the electrolyte is 2% NaCl + 8% NaNO 3 solution, the cathode feed rate is 1.00 mm/min, the involute internal spline formed by axial ECM can get a better pro le which basically meets the nishing requirements. The application of the foamed metal cathode laid a new technical foundation

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