Rotordynamics analysis of a double-helical gear transmission system

Chen, Siyu; Tang, Jinyuan; Li, Yuanping; Hu, Zehua

doi:10.1007/s11012-015-0194-0

Cited by 64 publications

(59 citation statements)

References 30 publications

(37 reference statements)

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“…Gears are used to transmit torque and change rotation speed in machines. Compared with other transmission systems, gear transmission has some advantages, such as small size, and precise transmission ratio, so it is widely used in many fields . During the practical operation, the gears are subjected to cyclic loading and failure usually occurs.…”

Section: Introductionmentioning

confidence: 99%

“…Compared with other transmission systems, gear transmission has some advantages, such as small size, and precise transmission ratio, so it is widely used in many fields. 1 During the practical operation, the gears are subjected to cyclic loading and failure usually occurs. Typical styles of failure include gear tooth fatigue fracture, work surface abrasion and pitting, gear surface bonding, and plastic deformation.…”

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confidence: 99%

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Experimental and numerical investigation of fatigue crack growth in the cracked gear tooth

Zhang

et al. 2016

Fatigue Fract Eng Mat Struct

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The numerical simulation was conducted to analyse the fatigue crack growth in gear with the finite element codes ansys (ANSYS, Inc. Canonsburg, Pennsylvania, USA.) and franc3d (Fracture Analysis Consultants, Inc. Ithaca, New York, USA.), and the corresponding fatigue test was also carried out. During the simulation, the location of maximal stress induced by the external force was first determined by the code ansys, and then the obtained results were imported into the franc3d to analyse the crack growth. The analysed results were input into the codes ansys and franc3d again to compute the stress and the stress intensity factor in the following steps. After several rounds of analysis, the results of the fatigue crack propagation were obtained. The investigations show that the crack mode I is dominant during the crack growth and the stress intensity factor KI raises with increase of crack growth length and a series of quarter‐elliptical cross sections of the ruptured gear tooth are obtained. The simulation results are in good accordance with experimental findings.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Experimental and numerical investigation of fatigue crack growth in the cracked gear tooth

Zhang

et al. 2016

Fatigue Fract Eng Mat Struct

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“…Then, the kinetic, , and potential, , energies of an individual Timoshenko beam element become [42,48,58,59]…”

Section: Shaftsmentioning

confidence: 99%

“…The coupled dynamic behaviour of geared rotor systems with gyroscopic effects has also been studied in great detail with a focus on the coupling effects of the gearbox due to its torsional, axial and lateral stiffness. Lateral-torsional coupling in spur geared rotors and lateral-torsional-axial coupling in helical geared rotors were shown by many studies [40][41][42][43][44][45][46][47][48][49]. Among these studies, the finite element method has become a popular tool for the dynamic analyses [41,42,44,45,48,49].…”

Section: Introductionmentioning

confidence: 99%

“…Lateral-torsional coupling in spur geared rotors and lateral-torsional-axial coupling in helical geared rotors were shown by many studies [40][41][42][43][44][45][46][47][48][49]. Among these studies, the finite element method has become a popular tool for the dynamic analyses [41,42,44,45,48,49]. Although the dynamic behaviours of spur and helical geared rotor systems are well understood today, less research has been carried out to understand the dynamic behaviour of planetary geared rotor systems [50][51][52][53][54][55][56][57] .…”

Section: Introductionmentioning

confidence: 99%

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Dynamic behaviour of three-dimensional planetary geared rotor systems

Tatar

Schwingshackl

Friswell

2019

Mechanism and Machine Theory

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A six degrees of freedom dynamic model of a planetary geared rotor system with equally spaced planets is developed by considering gyroscopic effects. The dynamic model is created using a lumped parameter model of the planetary gearbox and a finite element model of the rotating shafts using Timoshenko beams. The gears and carrier in the planetary gearbox are assumed to be rigid, and the gear teeth contacts and bearing elements are assumed to be flexible. The modal analysis results show that torsional and axial vibrations on the shafts are coupled in the helical gearing configuration due to the gear helix angle whereas these vibrations become uncoupled for spur gearing. Mainly, the vibration modes are classified as coupled torsional-axial, lateral and gearbox for the helical gear configuration, and torsional, axial, lateral and gearbox for the spur gear configuration. Modal energy analysis is used to quantify the coupling level between the shafts and the planetary gearbox, highlighting the impact of the gearbox on certain mode families. Gyroscopic effects of the planetary gearbox are found to be of great importance in the gearbox dominated modes.

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