Optimal Design of Damped Dynamic Vibration Absorber for Damped Primary Systems

Liu, Kefu; Coppola, Gianmarc

doi:10.1139/tcsme-2010-0008

Cited by 50 publications

(66 citation statements)

References 11 publications

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“…The previous studies on the torsional vibration of vehicle power train included the parameters' identification, the modeling simulation, and the vibration characteristics analysis. [1][2][3][4][5][6][7][8] Previous torsional vibration control researches of vehicle powertrain [9][10][11][12][13][14][15][16][17][18] focused on the way to reduce vibration and noise. Avoiding speed penalty region method and frequency adjusting approach were usually adopted in these studies.…”

Section: Introductionmentioning

confidence: 99%

Dynamic optimization of tracked vehicle power train based on torsional vibration analysis

Luo

et al. 2016

Advances in Mechanical Engineering

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Aiming at the vehicle power train, system dynamic optimization is profoundly studied based on the system torsional vibration characteristics analysis. First, based on the concentrated mass method, the general torsional vibration model of vehicle power train is established and solved after parameters' (inertia, stiffness, and damping) matrix and mathematic constraint conditions are acquired. Furthermore, both free vibration and forced vibration characteristics are analyzed. Second, the effects of the coupling stiffness on the dynamics behaviors of power train are thoroughly analyzed. The sensitivity analysis procedure is explored. And sensitivity models of both free and forced vibration feature parameters are deduced. Finally, dynamic optimization theory model and program are constructed based on genetic algorithm. The optimization results indicate that the proposed optimization method could contribute to the sharp attenuation of system torsional vibration.

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Section: Introductionmentioning

confidence: 99%

Dynamic optimization of tracked vehicle power train based on torsional vibration analysis

Luo

et al. 2016

Advances in Mechanical Engineering

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“…It is observed that the damping characteristics of the primary structure significantly influence the performance parameters, and hence, the attenuation. Several researchers have addressed the determination of optimum parameters for systems with light damping in primary structure (Ghosh and Basu 2007;Wong and Cheung 2008;Liu and Coppola 2010). The typical procedure adopted in obtaining the parameters for such systems is the optimization of response of the primary structure as discussed by Warburton (1982).…”

Section: Introductionmentioning

confidence: 99%

“…Different configurations of absorbers are also studied for effective transmission of energy, e.g., see Bapat and Kumaraswamy (1979) and Najafi, Ashory, and Jamshidi (2009). A damping element placed directly between the absorber and the base is efficient compared to that placed between the primary and the absorber mass as observed by Liu and Liu (2005) and Liu and Coppola (2010). The optimum frequency ratio for a light to moderately damped primary structure is given in closed form by Ghosh and Basu (2007) and procedure for obtaining absorber damping for continuous systems is given by Esmailzadeh and Jalili (1998) and Thompson (2007).…”

Section: Introductionmentioning

confidence: 99%

Design Considerations for Optimal Absorption of Energy from a Vibration Source by an Array of Harvesters

Sriramdas

Rastogi

Pratap

2015

Energy Harvesting and Systems

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Dynamic vibration absorption is a passive technique for suppressing unintended vibrations. Optimal absorption of energy from a vibration source entails the determination of absorber parameters such as resonant frequency and damping. In the present work, we propose a method to obtain these parameters for a generic case of large number of identical vibration absorbers placed on a vibration source. We discuss an iterative procedure to find the optimum absorber resonant frequency and damping by minimizing the total energy absorbed by the system. We also analyse the influence of damping of the entire set of absorbers on the total energy absorbed and the effect of the absorber mass on the bandwidth of absorption. The proposed method is verified by analysing the response of a set of cantilever absorber beams placed on a vibrating cantilever plate. The resonant frequencies of the system with different number of absorbers are verified experimentally. We identify, using our method, the absorber mass, resonant frequency and damping of the absorber at which significant amount of energy supplied to the system flows into absorbers. A potential application of this method in the context of energy harvesting is the design of harvesters for a given vibration source. We emphasize through our work that monitoring energies in the system and optimizing them is both rational and vital for designing multiple harvesters that absorb energy from a given vibration source optimally.

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“…A damped vibration absorber consists of a damper and a spring which are added to the primary mass on one side and attached to the absorber mass on the other side. Since Watts and Frahm [1,2] reported on the first [3][4][5][6][7] and tuning of the vibration absorber [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Optimal design of vibration absorber using minimax criterion with simplified constraints

Fang

Wang

2012

Acta Mech Sin

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In this paper, a minimax design of damped dynamic vibration absorber for a damped primary system is investigated to minimize the vibration magnitude peaks. Moreover, to reduce the sensitivity of the primary system response to variations of the forcing frequency for a twodegree-of-freedom system, the primary system should have two equal resonance magnitude peaks. To meet this requirement, a set of simplified constraint equations including distribution characteristics of the resonant frequencies of the primary system is established for the minimax objective function. The modified constraint equations have less unknown variables than those by other authors, which not only simplifies the computation but also improves the accuracy of the optimal values. The advantage of the proposed method is illustrated through numerical simulations.

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Optimal Design of Damped Dynamic Vibration Absorber for Damped Primary Systems

Cited by 50 publications

References 11 publications

Dynamic optimization of tracked vehicle power train based on torsional vibration analysis

Dynamic optimization of tracked vehicle power train based on torsional vibration analysis

Design Considerations for Optimal Absorption of Energy from a Vibration Source by an Array of Harvesters

Optimal design of vibration absorber using minimax criterion with simplified constraints

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