Comparative study on non-traditional torsional vibration isolators for automotive clutch dampers

Ngoc, Mai Van; Shinb, S.C.; Kimc, G.W.

doi:10.3397/1/376645

Cited by 5 publications

(2 citation statements)

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“…However, after the design of the passive torsional damper is completed, the dynamic parameters, including damping and stiffness, will be fixed (Ngoc et al, 2018). It means that the deviation of processing and installation technology, the temperature-dependent performance decay, and other factors, may cause problems such as poor performance matching between the designed torsional dampers and crankshaft system and narrow tuning range (Sinyayski 2019).…”

Section: Introductionmentioning

confidence: 99%

Semi-active control of crankshaft skyhook based on magnetorheological torsional damper

Wang

Ouyang²,

Hu³

et al. 2022

Front. Mater.

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The purpose of this study was to solve the problem that the damping of rubber or silicone oil torsional dampers used in crankshafts is not adjustable and cannot effectively control torsional vibration at different resonant frequencies. Based on the controlled rheological properties of magnetorheological (MR) smart materials, this study designed a new type of variable damping MR torsional damper (MRTD) and proposed a semi-active control method to effectively control the torsional vibration of the crankshaft under multiple harmonic resonances. First, a mechanical model of the MRTD and a lumped parametric mass model of the crankshaft system were developed, and the resonance frequency harmonic range of the crankshaft system operation was determined by the torsional vibration characteristics analysis. Then a semi-active skyhook control method for the MRTD was proposed, and a joint control simulation analysis was performed using Amesim and Matlab software. The torsional vibration control effects of the crankshaft system with no damper, MRTD with different damping coefficients, and MRTD with skyhook control under acceleration and uniform speed conditions were comprehensively investigated. The simulation results indicated that the skyhook damping control significantly reduced the torsional vibration amplitude under both acceleration and uniform speed conditions, verifying the effectiveness of the skyhook-based control strategy for MRTD.

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Section: Introductionmentioning

confidence: 99%

Semi-active control of crankshaft skyhook based on magnetorheological torsional damper

Wang

Ouyang²,

Hu³

et al. 2022

Front. Mater.

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“…The torsional vibration isolator equipped in automotive clutches and engines is another typical assembly. It works in the friction mode 17 , also like a rotational friction damper. A long time of working will wear the contact parts and may lead to the cost and reliability problems of the whole system.…”

Section: Introductionmentioning

confidence: 99%

Numerical study on a rotational hydraulic damper with variable damping coefficient

Zhao

Wang

Chen

2021

Sci Rep

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The rotational hydraulic damper has advantages in the design and control of rotational machines. This paper presents a novel hydraulic rotational damper with the characteristic of adjusting the damping coefficient. It is composed of a shell, a gap, a rotor shaft, sliding vanes, a valve, and a motor, just like a combination of a sliding pump system and a valve driven by a motor. A new cam ring slot designed to guide the radial motion of sliding vanes could reduce friction resistance force, which will also benefit the design of the sliding pump. The damping coefficient model of this damper is established based on dynamic analysis. Series of numerical simulations validate the impact of factors on the damping coefficient. Frictional resistances have little influence on the damping coefficient during most conditions. The total coefficient is positively correlative with the angular velocity and the valve angle. Therefore, changing the valve angle according to the rotor shaft’s angular speed could adjust the damping coefficient.

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Measurement Methods for Evaluating the Frequency Response Function of a Torque Converter Clutch

Jurmu

Robinette

Blough

et al. 2020

Rotating Machinery, Optical Methods &Amp; Scanning LDV Methods, Volume 6

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Comparative study on non-traditional torsional vibration isolators for automotive clutch dampers

Cited by 5 publications

References 0 publications

Semi-active control of crankshaft skyhook based on magnetorheological torsional damper

Semi-active control of crankshaft skyhook based on magnetorheological torsional damper

Numerical study on a rotational hydraulic damper with variable damping coefficient

Measurement Methods for Evaluating the Frequency Response Function of a Torque Converter Clutch

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