Effect of nonlinear impact damping on the frequency response of a torsional system with clearance

Kim, T.C.; Rook, Todd E.; Singh, Rajendra

doi:10.1016/j.jsv.2004.02.038

Cited by 42 publications

(26 citation statements)

References 27 publications

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“…There are also studies in literature on modeling of one way clutches [8][9]. Manual transmission dry clutch systems and their rotational behavior are examined by some researchers [10][11][12][13][14][15][16][17][18][41][42]. For example, Crowther and Zhang studied the torsional behavior of the clutch as an elastic system in the driveline [11].…”

Section: Introductionmentioning

confidence: 99%

Multiobjective Pareto Optimal Design of a Clutch System

Ozansoy¹,

Tevrüz²,

Muğan³

2015

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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Section: Introductionmentioning

confidence: 99%

Multiobjective Pareto Optimal Design of a Clutch System

Ozansoy¹,

Tevrüz²,

Muğan³

2015

IJET

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“…A practical gearbox system for wind turbines or vehicle manual transmissions under excitation conditions shows severe vibro-impacts due to clearance-type nonlinearities [1][2][3][4][5][6][7][8][9]. In general, clearance-type nonlinearties mean the nonlinear characteristics caused by the clearance such as a distance between two sub-systems.…”

Section: Introductionmentioning

confidence: 99%

“…For example, Padmanabhan and Singh [1] employed the harmonic balance method (HBM) to simulate neutral gear rattle in an automotive transmission. Kim et al [3] examined impact damping with clearance-type nonlinearities with focus on gear backlash. Yoon and Lee [8] used two smoothening factors to investigate practical nonlinear dynamic behaviors due to piecewise-type nonlinearities.…”

Section: Introductionmentioning

confidence: 99%

Vibro-Impact Energy Analysis of a Geared System with Piecewise-Type Nonlinearities Using Various Parameter Values

Yoon

Kim

2015

Energies

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Torsional systems with gear pairs such as the gearbox of wind turbines or vehicle driveline systems inherently show impact phenomena due to clearance-type nonlinearities when the system experiences sinusoidal excitation. This research investigates the vibro-impact energy of unloaded gears in geared systems using the harmonic balance method (HBM) in both the frequency and time domains. To achieve accurate simulations, nonlinear models with piecewise and clearance-type nonlinearities and drag torques are defined and implemented in the HBM. Next, the nonlinear frequency responses are examined by focusing on the resonance areas where the impact phenomena occur, along with variations in key parameters such as clutch stiffness, drag torque, and inertias of the flywheel and the unloaded gear. Finally, the effects of the parameters on the vibro-impacts at a specific excitation frequency are explained using bifurcation diagrams. The results are correlated with prior research by defining the gear rattle criteria with key parameters. This article suggests a method to simulate the impact phenomena in torsional systems using the HBM and successfully assesses vibro-impact energy using bifurcation diagrams.

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“…Piecewise-type nonlinearities such as multi-staged clutch dampers will be employed to simulate the nonlinear dynamic behaviors in terms of relative motions in a simple driveline system model. The large body of literature for piecewise-type nonlinearities and other problems can be reviewed [13][14][15][16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Effect of Various Excitation Conditions on Vibrational Energy in a Multi-Degree-of-Freedom Torsional System with Piecewise-Type Nonlinearities

Yoon

Kim

2015

Energies

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Dynamic behaviors in practical driveline systems for wind turbines or vehicles are inherently affected by multiple nonlinearities such as piecewise-type torsional springs. However, various excitation conditions with different levels of magnitudes also show strong relationships to the dynamic behaviors when system responses are examined in both frequency and time domains. This study investigated the nonlinear responses of torsional systems under various excitations by using the harmonic balance method and numerical analysis. In order to understand the effect of piecewise-type nonlinearities on vibrational energy with different excitations, the nonlinear responses were investigated with various comparisons. First, two different jumping phenomena with frequency up-and down-sweeping conditions were determined under severe excitation levels. Second, practical system analysis using the phase plane and Poincaré map was conducted in various ways. When the system responses were composed of quasi-periodic components, Poincaré map analysis clearly revealed the nonlinear dynamic characteristics and thus it is suggested to investigate complicated nonlinear dynamic responses in practical driveline systems.

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Effect of nonlinear impact damping on the frequency response of a torsional system with clearance

Cited by 42 publications

References 27 publications

Multiobjective Pareto Optimal Design of a Clutch System

Multiobjective Pareto Optimal Design of a Clutch System

Vibro-Impact Energy Analysis of a Geared System with Piecewise-Type Nonlinearities Using Various Parameter Values

Effect of Various Excitation Conditions on Vibrational Energy in a Multi-Degree-of-Freedom Torsional System with Piecewise-Type Nonlinearities

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