Development of a double magnetic circuit yield stress measurement device for magnetorheological fluid

Wu, Xiangfan; Xiao, Xingming; Tian, Zhen; Chen, Fei; Wang, Jian; Pan, Miao

doi:10.1177/1045389x16667557

Cited by 5 publications

(2 citation statements)

References 21 publications

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“…Export boundary. The coefficient of the temperature field composite heat transfer of the MRF yield stress testing device 16 reflects the effects of convective and radiation heat transfers.Therefore, the composite heat transfer coefficient a = 9.7 W/m 2 K is obtained combined with the calculation result of heat transfer between the stationary surface and the surrounding air of equation (9).…”

Section: Simulation Calculation and Experimentsmentioning

confidence: 99%

Analysis and evaluation of temperature field and experiment for magnetorheological fluid testing devices

Xiong

Luo

et al. 2021

Advances in Mechanical Engineering

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When a large amount of heat is produced during the operation of a MRF (magnetorheological fluid) testing device, the temperature of the device will increase, which will in turn affect the characteristics of the MRF. Exploring the temperature field characteristics of the MRF yield stress testing device is necessary to improve the accuracy of the device. In this study, first, the yield stress testing device is designed, and then its temperature field model, including enameled wire and assembly gap, is established. Second, simulation software is used to simulate the temperature field change. Finally, a test platform is developed to test the simulation results, especially for two factors, namely, thermal conductivity of the coil winding and assembly gap, which demonstrate considerable influence. Comprehensive thermal conductivity and assembly clearance are determined, and the optimum temperature field of the device for measuring yield stress is resulted.

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Section: Simulation Calculation and Experimentsmentioning

confidence: 99%

Analysis and evaluation of temperature field and experiment for magnetorheological fluid testing devices

Xiong

Luo

et al. 2021

Advances in Mechanical Engineering

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“…Specifically, the performance of MR devices is influenced by the shear stress, yield stress, viscosity, and normal force of MR fluids [13]. Both shear and yield stresses have an inversely proportional relationship to the temperature [14,15]. Meanwhile, a viscosity that has an inverse relationship with shear stress naturally has a proportional relationship with the operating temperature [16].…”

Section: Introductionmentioning

confidence: 99%

Constitutive models of magnetorheological fluids having temperature-dependent prediction parameter

Bahiuddin¹,

Mazlan²,

Shapiai³

et al. 2018

Smart Mater. Struct.

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This work presents constitutive models of magnetorheological (MR) fluids, which can predict the shear and dynamic yield stress depending on temperature. Two existing models, the Herschel–Bulkley rheological and power law model, which are frequently used in MR fluid research, are adopted and modified to take the temperature into account. A new constitutive model of MR fluids is developed using the extreme learning machine (ELM) method. In this development, among many machine learning approaches, a simple and efficient learning algorithm for a single hidden layer feed-forward neural network (SLFN) is adopted and applied to the rheological model of MR fluids. The temperature, shear rate, and magnetic field are treated as inputs, and the shear stress is taken as an output. After formulating the models associated with experimental coefficients, the two most important properties of MR fluids; the shear and yield stress are predicted and compared with the measured values. The prediction accuracy for the field-dependent rheological properties of MR fluids in several different temperatures is evaluated and compared. It is shown that the ELM model developed in this work provides the best accuracy, followed by two other modified constitutive equations.

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Study on the Influence of Temperature–Magnetic Field Coupling on the Mechanical Properties of Magnetorheological Fluids

Luo

et al. 2021

Physica Rapid Research Ltrs

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The composition of a magnetorheological fluid (MRF) usually includes magnetic particles, a carrier fluid, and additives. Among them, the magnetic particles and carrier fluid are the main sources of the mechanical properties of the MRF. The changes of the related properties of the two will affect the mechanical properties of the MRF directly or indirectly. Herein, first, the temperature–magnetic field characteristics are analyzed during the MRF working process. Then, the influence mechanism of temperature and magnetic field changes on the properties of the magnetic particles and carrier liquid are analyzed. On this basis, the traditional Bingham model is improved and optimized, in which the temperature variable is introduced to represent the effect of temperature–magnetic field coupling on the shear stress of the MRF. Finally, parameter fitting and simulation are carried out for the optimized model, and the self‐made shear stress of the MRF measuring device with temperature‐control function is used to experimentally verify the accuracy of the optimized model. The comparison and verification of the results show that the optimized model can better represent the variation of shear stress of an MRF with temperature and magnetic field than the traditional Bingham model.

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Development of a double magnetic circuit yield stress measurement device for magnetorheological fluid

Cited by 5 publications

References 21 publications

Analysis and evaluation of temperature field and experiment for magnetorheological fluid testing devices

Analysis and evaluation of temperature field and experiment for magnetorheological fluid testing devices

Constitutive models of magnetorheological fluids having temperature-dependent prediction parameter

Study on the Influence of Temperature–Magnetic Field Coupling on the Mechanical Properties of Magnetorheological Fluids

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