Effects of lightweight gear blank on noise, vibration and harshness for electric drive system in electric vehicles

Hou, Liguo; Lei, Yulong; Fu, Yao; Hu, Jianlong

doi:10.1177/1464419320915006

Cited by 17 publications

(11 citation statements)

References 28 publications

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“…The thunderous recurrence of vibration speed increase with pitch deviation decreases contrasting with the recurrence with standard pitch. This study gives proof that it is fundamental to think about the impact of pitch deviation when redesign the boundaries and anticipate vibration of round and hollow helical stuff transmission framework [9]. The most widely recognized and successful approach to turning apparatus analytic is to remove issue sway highlights from the vibration signals and to do additionally handling.…”

Section: Literature Review and Problem Statementmentioning

confidence: 72%

A numerical implementation study of the stresses and noise generated by the gear engagement in the gearbox

Khleif

2022

EEJET

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With the development of automotive technology and the increase in the performance of the moving parts in the car, the most important of which is the engine and gearbox. Where companies are working to increase the sound insulation of the movement of these parts outside and reduce the noise and stress generated because of movement, to study these noises and stresses, and to know the vibrations that give a high sound rate and wave pressure. Where it worked on a standard gearbox and simulated the movement of gears. To find out the stresses that are calculated because of this movement, the external stress caused by this movement of the gears, as well as the speed of the gears in the case of rotation, is also known. The results proved the contact areas of the main lip on the outer cover are greatly affected during the gearbox rotation process and also at high vibrations. The effect of vibrations and the Hertzian rate is significantly affected by it. At frequencies that reached 1500 Hz the value of stresses and deformation was relatively large. The acceleration and due to the different gear teeth, the acceleration value in this case was 3000 m/s2. The maximum value of shear stresses reached 9.5×104 Pa at the frequency between 1500 and 2000 Hz. The value of the vibration 1500 Hz is the highest value that achieved high noise as it was 112 dB, which is a 112 dB higher than the rest of the vibrations. The achievement of the condition of the presence of large noise when vibration 1500 Hz is reached is achieved by analyzing the noise produced by a car’s gearbox at that level. The amount of noise pressure and its wave through the outside air of the gearbox, where the amount of wave pressure of the noise reached a maximum value of 400 Pa and the lowest value ‑ 500 Pa.

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Section: Literature Review and Problem Statementmentioning

confidence: 72%

A numerical implementation study of the stresses and noise generated by the gear engagement in the gearbox

Khleif

2022

EEJET

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“…This phenomenon is called the "masking effect". However, in EVs, these issues reappear as major noise issues and these will have to be taken care of while designing an EV [102].…”

Section: Noise Issues In the Electric Vehiclementioning

confidence: 99%

A Review on Vibrations in Electric and Hybrid Electric Vehicles

Krishna

Mahesha

Hegde

et al. 2023

J. Inst. Eng. India Ser. C

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Electric vehicles (EVs) are promising solutions to the problems faced by combustion engine-propelled automobiles. The futuristic transportation system would be majorly catered by battery EVs, hybrid EVs, and fuel cell EVs with a different combination of energy sources that could successfully meet the requirements of different categories of vehicle propulsion systems. However, to execute such vehicle systems with a high level of safety and comfort for the transportation of people and products, a few difficulties must be resolved. EVs of today face problems such as noise-vibration-harshness, energy storage difficulties, torque fluctuation/ripple in the power train, inadequate range, and some others. The present review paper comprehends major noise and vibration issues existing in EVs and attempts made by the researchers to find solutions to such problems. The major problem faced by the vehicle as well as by the passengers is vibration and discomfort. These vibrations if continued for a longer period might cause severe damages to the vehicle structure as well as to the passenger’s body. These issues must be thoroughly addressed by researchers to increase ride comfort, which is a crucial requirement of the hour as well.

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“…e remaining issue is the development of simulation models able to predict the impact of different design parameters on gear vibration behavior. Hou et al [228] numerically and quantitatively investigated the impact of the rim and web thickness on static TE, meshing forces, bearing forces, and housing vibration. Gear rim and web thickness have a great influence on both the static and dynamic responses of the geared system of an electric vehicle.…”

Section: Shock and Vibrationmentioning

confidence: 99%

Classifying, Predicting, and Reducing Strategies of the Mesh Excitations of Gear Whine Noise: A Survey

Sun

Liu

et al. 2020

Shock and Vibration

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Gear whine noise has attracted increasing attention from researchers in both the academe and the industry over the past two decades. The wide range of research topics demonstrates that there is a huge technical challenge in understanding the source-path-receiver mechanisms deeply and predicting the gear whine noise precisely. Thoroughly understanding the sources of gear whine noise is the first step to solving this issue. In this paper, the authors summarize a certain number of published articles regarding the sources of gear whine noise. The excitations of gear whine noise are classified into three groups: transmission error along the line of action direction, frictional excitations along the off-line of action direction, and shuttling excitation along the axial direction. The mechanisms, characteristics, predicting approaches, measuring methods, and decreasing strategies for these excitations are summarized. Current research characteristics and future research recommendations are presented at the end.

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Effects of lightweight gear blank on noise, vibration and harshness for electric drive system in electric vehicles

Cited by 17 publications

References 28 publications

A numerical implementation study of the stresses and noise generated by the gear engagement in the gearbox

A numerical implementation study of the stresses and noise generated by the gear engagement in the gearbox

A Review on Vibrations in Electric and Hybrid Electric Vehicles

Classifying, Predicting, and Reducing Strategies of the Mesh Excitations of Gear Whine Noise: A Survey

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