Gear Mesh Excitation Models for Assessing Gear Rattle and Gear Whine of Torque Transmission Systems with Planetary Gear Sets

Morgan, Jeffrey A.; Dhulipudi, Maruthi R.; Yakoub, R. Y.; Lewis, Alan D.

doi:10.4271/2007-01-2245

Cited by 11 publications

(3 citation statements)

References 23 publications

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“…The FE method helped to realize the critical areas of the structures and to develop high-level models for calculating the acoustic reactions at precise distances. The other prior art approaches such as [6,8,9,17] dealt with a single facet of the problem such as the analysis of the transmission vibrations or just a static optimization or FE modeling etc., for the traditional drive trains. The approach described in this paper aided in building a complete flow analyzing the excitations from several sources on the gears, the motor, the bearings and the housing structures for the electromechanical drives.…”

Section: Discussionmentioning

confidence: 99%

Design and Optimization of a Three Stage Electromechanical Power Unit using Numerical Methods

Kolluru¹,

Doelling²,

Hedrich³

2020

Adv. sci. technol. eng. syst. j.

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The advent of electric vehicles has changed the face of the automobile industry. The drive system properties of vehicles such as eBikes or electric cars differ fundamentally from those of a diesel engine. The lack of a conventional internal combustion engine has made the vehicles considerably silent. Nevertheless, previously hidden sources of vibration and noise have become more dominant. In addition to these emissions, other structural properties such as compliance and deformation also appear as relevant factors for the original equipment manufacturer. Usually, deterioration of these variables affects the efficiency of the power unit. In this paper, a simulation template is created to understand and analyze these properties of the drive unit. Furthermore, new enhancements to improve the key indicators, such as strain energy, natural frequencies, etc., are shown, thereby creating a potential method flow to develop better performing drive units. Numerical optimization tools are used to simulate structures with complex shapes that exactly meet the mechanical constraints and use as little material as possible. In this work, two optimized variants of electromechanical drives are presented. The first scenario illustrates the optimized model with an objective of minimizing the strain energy of the structures, whereas the second task aids in the development of a variant with superior dynamic properties than the current drive units. Ultimately, several numerical calculations are validated using experiments.

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Section: Discussionmentioning

confidence: 99%

Design and Optimization of a Three Stage Electromechanical Power Unit using Numerical Methods

Kolluru¹,

Doelling²,

Hedrich³

2020

Adv. sci. technol. eng. syst. j.

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“…There are two forms of mechanical excitation mechanisms namely: parameter and path excitation, which represent the relevant part of internal dynamic additional forces and cause gearwheels to vibrate [LB10,MDY07].…”

Section: Analysis Of Inner Excitation Mechanismsmentioning

confidence: 99%

“…For example, paper [Fri11] describes the modeling of a generic rolling bearing. Work in [MDY07] deals with the comparison of different excitation mechanisms of gearboxes. Paper [MBR04] uses hydrodynamic considerations for the simulation of shock absorbers.…”

Section: Lumped Parameter Modelmentioning

confidence: 99%

Generic methodology for modeling and simulation of vibration, wear and noise in electromechanical drivetrains

Kolluru¹

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This work describes development of a comprehensive methodology for analyzing vibro-acoustic and wear mechanisms in transmission systems. The thesis addresses certain gaps present in the fields of structure dynamics and abrasion mechanism and opens new areas for further research. The paper attempts to understand new and relatively unexplored challenges like influences of wear on the dynamics of drive train. It also focuses on developing new techniques for analyzing the vibration and acoustic behavior of the drive unit structures and surrounding fluids respectively. The developed methodology meets the requirements of both the complete system and component level modeling by using specially identified combination of different simulation techniques. Based on the created template model, a three-stage spur plus helical gearbox is constructed and simulated as an application example. In addition to the internal mechanical excitation mechanisms, the transmission model also includes the rotational and translational dynamics of the gears, shafts and bearings. It is followed by illustration of wear among the rotating components. Different kinds of static and dynamic analyses are performed and coupled at various levels depending on the mechanical complexities involved. Furthermore, the structure dynamic vibration of the housing and the associated sound particle radiations are mapped into the surrounding fluid. Additionally, the approach for selection of the potential parameters for optimization is depicted. Final part focuses on the measurements of different system states used for validation of the model. In the end, results obtained from both simulations and experiments are analyzed and assessed for there respective performances.

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Rattle Simulation Analysis of a Manual Gearbox

Zhan

Peng

et al. 2012

Lecture Notes in Electrical Engineering

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Gear Mesh Excitation Models for Assessing Gear Rattle and Gear Whine of Torque Transmission Systems with Planetary Gear Sets

Cited by 11 publications

References 23 publications

Design and Optimization of a Three Stage Electromechanical Power Unit using Numerical Methods

Design and Optimization of a Three Stage Electromechanical Power Unit using Numerical Methods

Generic methodology for modeling and simulation of vibration, wear and noise in electromechanical drivetrains

Rattle Simulation Analysis of a Manual Gearbox

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