Gear Noise Reduction of an Automatic Transmission Through Finite Element Dynamic Simulation

Campbell, B A Albert; Stokes, Wayne; Steyer, Glen; Clapper, Mark; Krishnaswami, Ram; Gagnon, Nancy

doi:10.4271/971966

Cited by 16 publications

(4 citation statements)

References 1 publication

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“…Many researchers have modelled complete gearboxes in order to predict gear noise. Campell et al [15] used finite element dynamic modelling methods to predict gear noise from a rear wheel drive automatic transmission. The model was used to investigate the effects of different component's inertia, stiffness, and resonance.…”

Section: Dynamic Models Of Complete Gear Trains/gear Boxesmentioning

confidence: 99%

Experimental Investigations of Noise Control in Planetary Gear Set by Phasing

Gawande

Shaikh²

2014

Journal of Engineering

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Now a days reduction of gear noise and resulting vibrations has received much attention of the researchers. The internal excitation caused by the variation in tooth mesh stiffness is a key factor in causing vibration. Therefore to reduce gear noise and vibrations several techniques have been proposed in recent years. In this research the experimental work is carried out to study the effect of planet phasing on noise and subsequent resulting vibrations of Nylon-6 planetary gear drive. For this purpose experimental set-up was built and trials were conducted for two different arrangements (i.e., with phasing and without phasing) and it is observed that the noise level and resulting vibrations were reduced by planet phasing arrangement. So from the experimental results it is observed that by applying the meshing phase difference one can reduce planetary gear set noise and vibrations.

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Section: Dynamic Models Of Complete Gear Trains/gear Boxesmentioning

confidence: 99%

Experimental Investigations of Noise Control in Planetary Gear Set by Phasing

Gawande

Shaikh²

2014

Journal of Engineering

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“…However, the most meaningful and valid process is the overlay of test and analysis frequency response functions, and minimizing the error between them [4]. This process was used during the correlation procedure of the Light Weight Assembled Gear through several finite element models attempting to correlate the virtual response with the experimental result shown in Figure 3(e).…”

Section: Case 1 -Light Weight Assembled Gearmentioning

confidence: 99%

“…The SDRC CORDS correlation program uses design sensitivity and optimization methods, specifying geometrical changes, in order to identify model updates that minimize the difference in the test and analysis frequencies [4]. After these changes, the engineer has the responsibility to decide whether they are within the manufacturing process tolerance of the part.…”

Section: Best Practicesmentioning

confidence: 99%

Challenges and Best Practices During the Finite Element Analysis Formodal Investigationof Drivetrain Components

Souza¹,

Novo²,

Souza³

et al. 2014

Blucher Engineering Proceedings

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Engine downsizing is the use of a smaller engine in a vehicle that provides the power of a larger one. It is the result of car manufacturers attempting to provide more efficient vehicles by adding modern technologies, for instance, turbochargers, direct injection and variable camshaft. The smaller engine is also lighter and provides torque and power with similar performance to a much larger engine. However, the downsizing technique may lead to undesirable vibration effects on the driveline, such as structural damaging, vibration fatigue failure and extra noise. All these issues are related to natural frequencies investigation and they are often determined through the finite element method together with experimental tests during the product development phase. This work presents the finite element method limitation for natural frequencies determination of automotive components and a possible solution for this issue.

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“…Passive measures relate to transmission routes of structure-borne noise from the noise source to the car body. Examples of passive measures include increasing the stiffness of gear bodies, shafts, bearings and housings and separating the natural frequencies of these components and tuning the transmission mounting [92].…”

Section: Nvh Technologymentioning

confidence: 99%

Progress in Automotive Transmission Technology

Dong

Liu

et al. 2018

Automot. Innov.

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Much progress has been made in the development of automotive transmissions over the past 20 years, e.g., an increased speed number, expanded ratio spread and improved efficiency and shift quality. Automotive transmissions are moving toward electrification in response to stringent legislation on emissions and the pressing demand for better fuel economy. This paper reviews progress in automotive transmission technology. Assisted by computer-aided programs, new transmission schemes are constantly being developed. We therefore first introduce the synthesis of the transmission scheme and parameter optimization. We then discuss the progress in the transmission technology of a conventional internal combustion engine vehicle in terms of new layouts; improved efficiency; noise, vibration and harshness technology; and the shifting strategy and control technology. As the major development trend, transmission electrification is subsequently discussed; this discussion includes the configuration design, energy management strategy, hybrid mode shifting control, single-speed and multi-speed electric vehicle transmission and distributed electric drive. Finally, a summary and outlook are presented for conventional automotive transmissions, hybrid transmissions and electric vehicle transmissions.

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Gear Noise Reduction of an Automatic Transmission Through Finite Element Dynamic Simulation

Cited by 16 publications

References 1 publication

Experimental Investigations of Noise Control in Planetary Gear Set by Phasing

Experimental Investigations of Noise Control in Planetary Gear Set by Phasing

Challenges and Best Practices During the Finite Element Analysis Formodal Investigationof Drivetrain Components

Progress in Automotive Transmission Technology

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