Targeted energy transfer and modal energy redistribution in automotive drivetrains

Motato, Eliot; Haris, Ahmed; Theodossiades, Stephanos; Mohammadpour, Mahdi; Rahnejat, Homer; Kelly, P.; Vakakis, A. F.; McFarland, D. Michael; Bergman, Lawrence A.

doi:10.1007/s11071-016-3034-4

Cited by 56 publications

(16 citation statements)

References 38 publications

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“…subject to differential Equations (1), given initial state and the restrictions on the design parameters Equation (14). The Equation (16) express the requirements on the vector of design parameters d * and the vector of generalized coordinates q * (t) to guarantee the best attenuation of oscillation of the torque at the transmission input shaft, and at the same time to minimize the total mass inertia of the vibration absorber.…”

Section: Weight-vibration Pareto Optimizationmentioning

confidence: 99%

“…The DMF was a subject of intensive research [1][2][3][4][5][6][7][8], and has been used in passenger car since the 1980s [9]. To increase the quality of vibration attenuation, the concept of a DMF began to be modified by incorporating additional spring-mass components by combining with a so-called centrifugal pendulum vibration absorber, and additional absorbers with smooth and non-smooth nonlinearities [9][10][11][12][13][14]. Interesting research is ongoing on the development of controlled DMF for torsional vibration attenuation in powertrain systems using controllable magnetorheological elastomeric springs and an appropriate controller design [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…), it is required to determine the vector of the design parameters of the TMF ), given initial state and the restrictions on the design parameters Equation(14).The Equation (16) express the requirements on the vector of design parameters…”

mentioning

confidence: 99%

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Weight-Vibration Pareto Optimization of a Triple Mass Flywheel for Heavy-Duty Truck Powertrains

Berbyuk

2020

Machines

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Enhanced efficiency of heavy-duty truck powertrains with constraints imposed on noise, vibration, and harshness requires novel solutions for torsion vibrations attenuation. In the paper, the weight-vibration Pareto optimization problem for a novel vibration absorber, a triple mass flywheel, for application in heavy-duty truck powertrains is considered. Global sensitivity analysis and Pareto optimization method are used to design a novel vibration absorber. The optimization method attempts to minimize oscillations of the torque at the transmission input shaft as well as to minimize total mass inertia of the absorber. It is shown that there exists a Pareto front between the measure of the attenuation of oscillations of the torque and the total mass inertia of a triple mass flywheel. The optimized design parameters for the absorber are obtained that provide the best attenuation of oscillations of the torque at the transmission input shaft for different mean values of the engine driving torque. The analysis shows real evidence of the feasibility of the application of this concept of vibration absorbers in heavy-duty truck powertrains. It is also shown that optimized design parameters of a triple mass flywheel put this concept in a superior position in comparison with a dual mass flywheel.

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Section: Weight-vibration Pareto Optimizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Weight-Vibration Pareto Optimization of a Triple Mass Flywheel for Heavy-Duty Truck Powertrains

Berbyuk

2020

Machines

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“…Savva et al [16] studied the effect that NES damping has on suppressing torsional vibrations of automotive engines operating at idling conditions. In a numerical study, Motato et al [18] demonstrated the characteristic behaviour of an NES for attenuation of torsional vibration of a vehicle powertrain through energy re-distribution and energy dissipation. Scagliarini et al [19] modelled a spur gear pair under constant excitation.…”

Section: Introductionmentioning

confidence: 99%

A Study on Attenuating Gear Teeth Oscillations at Low Engine Speeds Using Nonlinear Vibration Absorbers

Friskney¹,

Motato²,

Haris³

et al. 2018

SAE Technical Paper Series

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Gear oscillations are one of the most common sources of Noise, Vibration and Harshness (NVH) issues manifested in automotive powertrains. These oscillations are generated mainly due to impacts of the meshing gear teeth over a broad frequency range. To mitigate NVH phenomena, automotive manufacturers traditionally couple linear tuned vibration absorbers to the driveline. Common palliatives used are clutch dampers and dual mass flywheels, which generally suppress vibrations effectively only over narrow frequency bands. Nonlinear Energy Sinks (NESs) are a class of vibration absorbers with essentially nonlinear characteristics that are designed for dissipating vibration energy over broad frequency ranges (due to the employed nonlinearity). The NES does not have a preferential natural frequency; this is rather characterized by the nonlinear stiffness. An NES functions on the principle of transferring energy between the primary system (e.g. driveline) and the absorber in two ways: (i) the NES induces a unidirectional transfer of the vibration energy excess from the primary system to the absorber and (ii) the NES induces a redistribution of the vibration energy excess in the modes of the primary structure, enhancing the energy dissipation capabilities of the primary structure. This paper presents a study on the use of NESs for reducing oscillations on gear pairs operating at low engine operating speeds. Numerical simulations were performed using a gear pair model equipped with an absorber with essentially cubic nonlinear stiffness, attached to the gear wheel. The stiffness and inertia properties of the absorber were varied with the objective of obtaining the parameter combination that induces significant attenuation of the oscillatory motion of the gear wheel. The occurring motion of the system using different sets of parameters is studied and presented.

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“…The analytical solution presented in this work provides a background for the design of alternative torsional vibration absorbers, which has attracted significant attentions recently, especially, the latest research topic on nonlinear energy sinks toward vibration suppression for a broader range of frequencies. [18][19][20] Optimization of the DVA Model of the system Figure 1 shows the model of a linear damped structure considered in this study. The primary system is represented by a shaft with N elements (N degrees of freedom) excited by a time-variant torsional moment M(t).…”

Section: Introductionmentioning

confidence: 99%

Closed-form solutions to the optimization of dynamic vibration absorber attached to multi-degrees-of-freedom damped linear systems under torsional excitation using the fixed-point theory

Nguyen

Khong

et al. 2017

Proceedings of the IMechE

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Traditional design optimization of the Voigt-type dynamic vibration absorber often solved for the vertical or lateral vibration problems. However, for the damped primary system under torsional excitation, to the best of our knowledge, there is no study to solve this problem by algebraic approaches. This paper presents the analytical solutions to the optimization of dynamic vibration absorber, which is used to suppress torsional vibration of multi-degrees-of-freedom damped linear systems. The parameters considered in optimizing are dimensionless natural frequency of dynamic vibration absorber and viscous damping of absorber. First, the system equations of motion for shaft-dynamic vibration absorber system subjected to time-varying torsional moment were established. Then, closed-form formulae of optimized parameters were derived using the fixed-point theory. The obtained formulae provide exact solution for the proposed problem. To confirm the effectiveness of the obtained formulae, parametric studies on torsional vibration were performed for several sample multi-degrees-of-freedom systems with and without optimal dynamic vibration absorber. Numerical results showed that torsional vibrations of the primary system attached with optimal dynamic vibration absorber are effectively suppressed, even in the resonant conditions.

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Targeted energy transfer and modal energy redistribution in automotive drivetrains

Cited by 56 publications

References 38 publications

Weight-Vibration Pareto Optimization of a Triple Mass Flywheel for Heavy-Duty Truck Powertrains

Weight-Vibration Pareto Optimization of a Triple Mass Flywheel for Heavy-Duty Truck Powertrains

A Study on Attenuating Gear Teeth Oscillations at Low Engine Speeds Using Nonlinear Vibration Absorbers

Closed-form solutions to the optimization of dynamic vibration absorber attached to multi-degrees-of-freedom damped linear systems under torsional excitation using the fixed-point theory

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