The effect of liquid temperature and viscosity on the amplitude-frequency characteristics of a viscotic torsion damper

Homik, Wojciech

doi:10.2478/v10012-012-0042-2

Cited by 5 publications

(6 citation statements)

References 2 publications

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“…Existing studies have not taken into account the problem that the internal temperature of MR-TVA will rise and its performance will decrease when designing a torsional vibration absorber, nor do they consider the importance of MR-TVA's response speed to engine torsional vibration damping. It should be known that the temperature rise of the torsional vibration absorber in operation is quite large [28], while the magnetorheological fluid has a high sensitivity to temperature, which greatly reduces its working performance in a high-temperature environment, thereby greatly weakening the vibration damping effect of MR-TVA [29,30]. Additionally, since the heat provided by the coil accounts for a considerable part of the heat generated by the shock absorber, it is necessary to optimize the MR-TVA magnetic circuit structure to achieve the same damping effect at a smaller current to reduce the heat generated by the coil.…”

Section: Introductionmentioning

confidence: 99%

Multi-Objective Optimization Design and Performance Comparison of Magnetorheological Torsional Vibration Absorbers of Different Configurations

Liu

Ouyang

et al. 2023

Materials

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The purpose of this study is to provide a convenient optimization design method for magnetorheological torsional vibration absorbers (MR-TVA) suitable for automotive engines, which is a damper matching design method that takes into account the needs of the engine operating conditions. In this study, three kinds of MR-TVA with certain characteristics and applicability are proposed: axial single-coil configuration, axial multi-coil configuration and circumferential configuration. The magnetic circuit model, damping torque model and response time model of MR-TVA are established. Then, under the constraints of weight, size and inertia ratio, according to different torsional vibration conditions, the MR-TVA mass, damping torque and response time are multi-objective optimized in two directions. The optimal configurations of the three configurations are obtained from the intersection of the two optimal solutions, and the performance of the optimized MR-TVA is compared and analyzed. The results show that the axial multi-coil structure has large damping torque and the shortest response time (140 ms), which is suitable for complex working conditions. The damping torque of the axial single coil structure is generally large (207.05 N.m), which is suitable for heavy load conditions. The circumferential structure has a minimum mass (11.03 kg) and is suitable for light load conditions.

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Section: Introductionmentioning

confidence: 99%

Multi-Objective Optimization Design and Performance Comparison of Magnetorheological Torsional Vibration Absorbers of Different Configurations

Liu

Ouyang

et al. 2023

Materials

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“…Scholars and researchers have carried out some theoretical research on the related factors that affect the vibration characteristics of shock absorber [8][9] . Based on calculating and analyzing the torsional vibration of the multicylinder internal combustion engine, Homik W et al [10] further discussed the change law of the vibration damping efficiency of the shock absorber when the damping viscosity changes. WANG M S et al [11] established a torsional vibration simulation method based on dynamic equilibrium by analyzing the internal relation between the working condition, damping coefficient, viscosity and temperature of silicone oil damper.…”

Section: Introductionmentioning

confidence: 99%

Research on torsional vibration of marine diesel generator system based on silicon oil damper

Xiao,

Hu,

et al. 2023

Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023)

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Vibration does great harm to the reliability, safety and silence of diesel generator system. The mechanical characteristics and damping mechanism of silicone oil shock absorber are studied by establishing the equivalent fluid mechanics model of the inertia ring of silicone oil shock absorber in the shell. According to the established mathematical model of torsional vibration of diesel generator system, the inertia matrix, stiffness matrix, damping matrix and excitation moment vector are established by programming in MATLAB. The system matrix method is used to solve and analyze the natural frequency and response vibration characteristics of the diesel generator shaft system. To verify the correctness of the vibration calculation results of the diesel generator set system, the vibration test of the generator set system was carried out using the photoelectric coding and shafting vibration tester with independent intellectual property rights.

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“…At present, there are many studies on the temperature analysis of viscous fluid torsional vibration dampers and magnetorheological rotary dampers. Homik et al proposed a thermal fluid dynamics model for viscous torsional vibration dampers and investigated the effect of temperature and viscosity variations of the damping fluid inside the torsional vibration damper on the efficiency of the torsional vibration damper (Homik, 2012;Homik et al, 2021). Venczel et al developed a two-dimensional thermal calculation program based on the finite difference method, analyzed the heat transfer process inside silicone oil dampers, and developed a temperature and shear rate-dependent viscosity model for the silicone fluid (Venczel and Veress.…”

Section: Introductionmentioning

confidence: 99%

Multi-Condition Temperature Field Simulation Analysis of Magnetorheological Grease Torsional Vibration Damper

Xiao

Ouyang

et al. 2022

Front. Mater.

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To reveal the transient temperature distribution pattern inside the magnetorheological grease (MRG) torsional vibration damper and explore the relationship between the current and internal temperature of the device, the transient temperature simulation analysis of the MRG device was conducted in this study. Firstly, a theoretical heat transfer model of MRG torsional vibration damper with dual heat source structural feature was established based on the Bingham constitutive model and the temperature-dependent viscosity characteristic of MRG. Then, the transient temperature field model of the MRG torsional vibration damper was developed by the finite element method, the temperature field distribution and temperature–time variation characteristics of the MRG torsional vibration damper at 0A, 1A, and 2A working conditions were analyzed, and the effects of viscosity and slip factors on the temperature rise of the device were investigated. The simulation results show that the temperature rise of MRG in the working domain is the fastest, but a gradual slowing of the temperature rise rate. The magnitude and rate of temperature rise are maximum when the 1A current is applied to the torsional vibration damper. Finally, the current–temperature curve is obtained by fitting the simulation results. The results of the analysis reveal the internal temperature distribution and temperature rise characteristics of the torsional vibration damper, which provide a theoretical basis for the structural optimization and control strategy design of the MRG torsional vibration damper considering temperature as a factor.

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The effect of liquid temperature and viscosity on the amplitude-frequency characteristics of a viscotic torsion damper

Cited by 5 publications

References 2 publications

Multi-Objective Optimization Design and Performance Comparison of Magnetorheological Torsional Vibration Absorbers of Different Configurations

Multi-Objective Optimization Design and Performance Comparison of Magnetorheological Torsional Vibration Absorbers of Different Configurations

Research on torsional vibration of marine diesel generator system based on silicon oil damper

Multi-Condition Temperature Field Simulation Analysis of Magnetorheological Grease Torsional Vibration Damper

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