Experimental study of gear rattle excited by a multi-harmonic excitation

Barthod, M.; Hayne, B.; Tebec, Jean‐Louis; Pin, J.-C.

doi:10.1016/j.apacoust.2006.04.011

Cited by 47 publications

(23 citation statements)

References 22 publications

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“…Based on the equivalent principle of inertia [3], rattle behavior of the gear system can be equivalent to the superposition of single gear pairs' vibration effect. For convenience, a single straight gear pair is used for the numerical modeling [4].…”

Section: Modeling Of Single Stage Gearmentioning

confidence: 99%

Dynamics Modeling of Transmission Gear Rattle and Factors Analysis

Zhao¹,

Zhang²

2017

Proceedings of the 3rd Annual International Conference on Mechanics and Mechanical Engineering (MME 2016)

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Section: Modeling Of Single Stage Gearmentioning

confidence: 99%

Dynamics Modeling of Transmission Gear Rattle and Factors Analysis

Zhao¹,

Zhang²

2017

Proceedings of the 3rd Annual International Conference on Mechanics and Mechanical Engineering (MME 2016)

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“…The experimental analysis of rattle noise requires test benches able to reproduce engine acyclism by means of a universal joint for example [9]. Many studies are focused on idle gear noise (gearbox on neutral) and use electro-dynamic translation exciters [10,11]. Kadmiri et al [6] exploit a dedicated test bench replicating excitations from an automotive powertrain.…”

Section: Introductionmentioning

confidence: 99%

Non-intrusive rattle noise detection in non-stationary conditions by an angle/time cyclostationary approach

Baudin

Rémond

Antoni

et al. 2016

Journal of Sound and Vibration

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a b s t r a c tThis work proposes an original non-intrusive approach to detect and quantify rattle noise in automotive gearboxes operating under non-stationary conditions by means of vibration or instantaneous angular speed measurements. Rattle noise is produced by vibro impacts between teeth of unloaded gears excited by the engine acyclism. It appears during acceleration or deceleration phases and its detection requires the analysis of nonstationary signals. In order to take advantage of the repetitive nature of the impacts, an angle/time cyclostationary approach is introduced. Rattle noise is thus characterized through the angle/time duality: the cyclic frequency expressed in events per revolution is directly linked to the periodicity of the impacts while their frequency content is expressed in Hertz. The proposed detection method uses an order/frequency spectral coherence and may be applied either on vibration signals or instantaneous angular speed signals. For validation purposes, a specific instrumentation of a gearbox is set up. The relative speed of the unloaded meshing gears is observed by means of optical encoders to directly detect the instants of impact which then serve as a basis for validation of the non-intrusive detection method proposed in this paper.

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“…Some of these studies focused on neutral gear rattle [34][35], some of them focused on backlash effects [15,[36][37]. Barthod et al studied gear rattle phenomenon to understand the rattle threshold and rattle noise evolution in relation with excitations and mechanical gearbox parameters [38]. On the other hand, ergonomic issues of the clutch pedal characteristic for different driver profiles are studied in [39].…”

Section: Introductionmentioning

confidence: 99%

Multiobjective Pareto Optimal Design of a Clutch System

Ozansoy¹,

Tevrüz²,

Muğan³

2015

International Journal of Engineering Technologies IJET

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Abstract-Optimum design of a clutch and dual mass flywheel system is completed. Although the clutch systems are exposed to both rotational and axial vibrations, they are generally designed by considering rotational vibrations of engines and they do not have any component to damp axial vibrations due to the following two reasons: first, the package area of the clutch system is very limited and there is no available space to put additional springs and dampers to reduce these vibrations. Second, axial vibrations are normally insignificant to be considered in the analyses and such vibrations are supposed to be damped by the diaphragm spring and cushion springs. Nonetheless, axial vibrations may lead to some unexpected problems in the power train such as the rattle noise that is examined in this study by using global optimization techniques. The components in the clutch system are modeled analytically. Then, by considering the pedal characteristics and vibrations of pressure plate as objective functions, a multi-objective Pareto optimization problem is solved. It is shown that analytical models agree well with the experimental measurements and vibrations in the clutch system can be reduced significantly by choosing the design parameters with optimization tools.

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Experimental study of gear rattle excited by a multi-harmonic excitation

Cited by 47 publications

References 22 publications

Dynamics Modeling of Transmission Gear Rattle and Factors Analysis

Dynamics Modeling of Transmission Gear Rattle and Factors Analysis

Non-intrusive rattle noise detection in non-stationary conditions by an angle/time cyclostationary approach

Multiobjective Pareto Optimal Design of a Clutch System

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