Log in

Relevant bibliographies by topics / Magnetic clutches / Journal articles

To see the other types of publications on this topic, follow the link: Magnetic clutches.

Journal articles on the topic 'Magnetic clutches'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Magnetic clutches.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Bucchi, Francesco, Paola Forte, and Francesco Frendo. "Geometry optimization of a magnetorheological clutch operated by coils." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 231, no. 1-2 (September 25, 2016): 100–112. http://dx.doi.org/10.1177/1464420716665650.

Full text

Abstract:

Magnetorheological fluids are smart materials responsive to magnetic field, widely applied in dampers and shock absorbers but also in clutches and brakes. The magnetorheological fluid gap shape is a very important topic in the design of clutches, since it directly influences the transmissible torque and the power loss. In this paper, an approach to magnetorheological fluid clutch design based on optimization is proposed and tested on four different layouts. Starting from a given available volume, two magnetorheological fluid gap shapes, namely single cylinder and multi-disc, and two coils positions, i.e. internal or external, were considered. A lumped parameter model was developed to analytically compute the magnetic flux along the clutch magnetic circuit and to calculate the transmissible torque of the clutch. The optimal geometry of the clutch for maximum transmissible torque, in terms of number and dimensions of the coil sectors, was determined for each shape and coil configuration and the results were validated by finite element models.

APA, Harvard, Vancouver, ISO, and other styles

2

Krasilnikov, A. Ya, and A. A. Krasilnikov. "Magnetic clutches and magnetic systems in sealed machines." Chemical and Petroleum Engineering 48, no. 5-6 (September 2012): 306–10. http://dx.doi.org/10.1007/s10556-012-9615-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Krasil’nikov, A. Ya, and A. A. Krasil’nikov. "High-coercivity permanent magnets in magnetic clutches." Chemical and Petroleum Engineering 42, no. 9-10 (September 2006): 582–85. http://dx.doi.org/10.1007/s10556-006-0146-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Pilon, Raphaël, Alexandre Landry-Blais, Benoit Gillet, Anaële Pin, Jean-Philippe Lucking Bigué, and Jean-Sébastien Plante. "A magnetic screw pump for magnetorheological clutch durability enhancement." Journal of Intelligent Material Systems and Structures 31, no. 7 (February 19, 2020): 945–55. http://dx.doi.org/10.1177/1045389x20906474.

Full text

Abstract:

Magnetorheological clutches have great potential for demanding applications such as powertrains and aircraft primary flight controls. However, in such high-power applications (>1 kW), durability is a challenge because of the continuous slippage at the clutch shear interface. To improve durability, this research studies the potential of using a magnetic screw pump to promote fluid mixing within a magnetorheological clutch. The screw flights are made of magnetorheological fluid formed by the concentration of the magnetic field lines around helical grooves machined into the shear interface (drum) of the clutch. While the magnetic pump does not display a typical screw pump behavior, a semi-empirical yield screw pump model is proposed to better understand the macroscopic behavior. Experimental flow characterization results show that the pressure–flow relation is significantly affected by the number of grooves, magnetic field intensity, and rotational speed. For a clutch containing 50 mL of magnetorheological fluid, maximum flow rates of up to 25 mL/min and a maximum pressure of 150 kPa are achieved. Finally, durability test results show that the magnetic screw pump can increase durability by up to 42% when compared to a standard magnetorheological clutch, confirming that such a device is a viable solution for promoting durability.

APA, Harvard, Vancouver, ISO, and other styles

5

Lorimer, W., and A. Hartman. "Magnetization pattern for increased coupling in magnetic clutches." IEEE Transactions on Magnetics 33, no. 5 (1997): 4239–41. http://dx.doi.org/10.1109/20.619722.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Krasil’nikov, Ya A., and A. A. Krasil’nikov. "Highly coercive permanent magnets in standard magnetic clutches." Russian Engineering Research 29, no. 4 (April 2009): 342–44. http://dx.doi.org/10.3103/s1068798x09040042.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Krasil’nikov, A. Ya, and A. A. Krasil’nikov. "Standard Designs of Magnetic Systems and Magnetic Clutches for Hermetic Equipment." Atomic Energy 118, no. 1 (April 18, 2015): 40–46. http://dx.doi.org/10.1007/s10512-015-9953-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Krasil’nikov, A. Ya, and A. A. Krasil’nikov. "Repulsive forces of highly coercive permanent magnets in magnetic clutches and plane magnetic systems." Russian Engineering Research 33, no. 4 (April 2013): 194–96. http://dx.doi.org/10.3103/s1068798x13040114.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Krasilnikov, A. Ya. "Order of Selection and Design of Magnetic Clutches for Sealed Machines." Chemical and Petroleum Engineering 49, no. 7-8 (November 2013): 467–75. http://dx.doi.org/10.1007/s10556-013-9775-8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Krasil’nikov, A. Ya, and A. A. Krasil’nikov. "Attractive forces of highly coercive permanent magnets in end magnetic clutches and plane magnetic systems." Russian Engineering Research 30, no. 6 (June 2010): 543–46. http://dx.doi.org/10.3103/s1068798x1006002x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Yadmellat, Peyman, and Rajni V. Patel. "Frequency response analysis of magneto-rheological clutch designs." Journal of Intelligent Material Systems and Structures 29, no. 5 (August 4, 2017): 905–23. http://dx.doi.org/10.1177/1045389x17721058.

Full text

Abstract:

This article presents the frequency response analysis performed on two different geometrical configurations of magneto-rheological clutches including disk-based and drum-based configurations. For each configuration, two sub-configurations with inner coil and outer coil designs are studied. The configurations are thoroughly studied with respect to the effect of design parameters on the bandwidth of magneto-rheological clutches using finite element analysis and by considering the effect of eddy currents and the skin effect in the magnetic circuit. The N-way analysis of variance is used to study the effect of the main parameters as well as interaction between the parameters on the bandwidth. Furthermore, trade-offs between the effect of the main parameters and the torque capacity are discussed.

APA, Harvard, Vancouver, ISO, and other styles

12

Krasil’nikov, A. Ya. "Magnetic clutches based on highly coercive permanent magnets with a small active length." Russian Engineering Research 37, no. 7 (July 2017): 565–67. http://dx.doi.org/10.3103/s1068798x17070164.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Krasilnikov, A. Ya, and A. A. Krasilnikov. "Analysis of the repulsive force of highly coercive permanent magnets in surface magnetic clutches and plane magnetic systems." Chemical and Petroleum Engineering 47, no. 5-6 (September 2011): 309–14. http://dx.doi.org/10.1007/s10556-011-9465-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Horak, Wojciech, and Marcin Szczęch. "Analysis of the Influence of Magnetic Induction Ramp Profile on Axial Force and Friction Torque Generated by MR Fluid." Acta Mechanica et Automatica 13, no. 3 (September 1, 2019): 153–57. http://dx.doi.org/10.2478/ama-2019-0020.

Full text

Abstract:

Abstract The unique properties of magnetic fluids result from their ability to undergo reversible, almost immediate, changes in their rheological properties under the influence of magnetic fields as well as the possibility to position them by magnetic field forces. It is also possible to control the direction and flow rate of such fluids. These properties provide an efficient way to develop new types of controllable machines and devices, such as brakes, clutches and bearings. The objective of the study was to examine the axial force and torque friction of a magnetorheological (MR) fluid working in the shear flow mode (parallel plate system) subjected to different magnetic induction ramp profiles. The rotation speed and working gap height were also taken into account. Determining the response of the tested system to magnetic induction change in different working conditions was of particular interest.

APA, Harvard, Vancouver, ISO, and other styles

15

Chen, Song, and Jing Yang. "Probing Slip Differential Heat of Magnetorheological Fluids Subjected to Shear Mode Operation and Its Effect on the Structure." Materials 12, no. 11 (June 8, 2019): 1860. http://dx.doi.org/10.3390/ma12111860.

Full text

Abstract:

The paper probes slip differential heat of magnetorheological fluids (MRFs) subjected to shear mode operation and its effect on the structure. To begin, we present a novel model for measurement of slip differential heat to describe temperature rise of MRFs mainly caused by friction between magnetorheological particles. It includes two stages: (1) The micro-macro analysis of slip differential heat of MRFs including force, movement and heat between neighboring particles based on magnetic dipole and Hertzian contact theories, and (2) the further application to two basic disc-type and cylinder-type magnetorheological clutches combined with finite element simulations involving electromagnetic field and thermal analysis. The model takes into account the effect of each of the main influencing factors, such as the input current of excitation coil, the rotational speed difference of the clutches, the size and volume fraction of particles, the saturation magnetization of particles, and the structural size of the clutches, etc., on the slip differential heat of MRFs. Then the thermal structure analysis of MRFs comprising thermal deformation and equivalent thermal stress is carried out. Moreover, the effect of typical governing parameters on the slip power of MRFs and the influence of slip differential heat on the structure of MRFs are investigated individually. We show that such a model is effective in reflecting the temperature-slip time relation of MRFs. It is shown that the input current and the rotational speed difference have great effect on the slip power, and the slip differential heat has a certain influence on the micro-structure of MRFs.

APA, Harvard, Vancouver, ISO, and other styles

16

Krasilnikov, A. Ya, and A. A. Krasilnikov. "Calculating vapor attraction for high-coercivity permanent magnets in planar magnetic systems and end clutches." Chemical and Petroleum Engineering 45, no. 11-12 (November 2009): 696–701. http://dx.doi.org/10.1007/s10556-010-9264-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Krasil’nikov, A. Ya, and A. A. Krasil’nikov. "Influence of layout of sealed pumps having a magnetic clutch on displacement angle of half-clutches and power loss in conducting screen." Chemical and Petroleum Engineering 45, no. 5-6 (May 2009): 293–97. http://dx.doi.org/10.1007/s10556-009-9181-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Shah, Kruti, R. V. Upadhyay, and V. K. Aswal. "Nano-MRF: A Material for Damping Application." Solid State Phenomena 209 (November 2013): 35–38. http://dx.doi.org/10.4028/www.scientific.net/ssp.209.35.

Full text

Abstract:

A magnetorheological fluid (MR), a suspension of micron-sized magnetic particles in a carrier fluid, has vast applications in the field of vibration dampers, seismic vibration dampers, shock absorbers, clutches, break system, vehicle suspensions, seat suspensions, Robotics, design of buildings and bridges etc. The biggest issue in MR fluid is the settling of particles under gravity. To overcome this, one of the approaches is to mix micron size particles in a magnetic fluid (MF) known as Nano-MRF. In the present paper, we report a technique to synthesis Nano-MRF suspension having high stability under gravitation as well as magnetic field. X-ray diffraction (XRD) and dynamic light scattering are used to characterize the solid/liquid system. Magnetic and Magnetorheological properties are studied and results indicate that: instead of decreasing stress with increasing temperature we have observed an increase until 40°C and thereafter, it decreases. This is explained based on, inter and intra particles/chain interaction as well as synergetic effect between small and large sized magnetic dispersion.

APA, Harvard, Vancouver, ISO, and other styles

19

Baek, Tae Hyun, and Myung Soo Kim. "Test and Evaluation of a Newly Built Multi-Purpose Transmission Type Polariscope." Key Engineering Materials 321-323 (October 2006): 81–86. http://dx.doi.org/10.4028/www.scientific.net/kem.321-323.81.

Full text

Abstract:

A multi-purpose polariscope was developed by applying an electro-mechanical control system to a diffused transmission-type circular polariscope. A conventional polariscope is only good for manual control of optical elements. The new polariscope system was devised to be controlled through two stepping motors and two magnetic clutches. The new polariscope can be used not only for the point-wise measurement using Tardy compensation technique but also for the full-field fringe analysis using conventional and/or phase measuring techniques, if applicable. The distributions of digitally determined unwrapped isoclinics and isochromatics using the digitized images obtained from the developed polariscope were in close agreement to manual measurements.

APA, Harvard, Vancouver, ISO, and other styles

20

Krasilnikov, A. Ya, and A. A. Krasilnikov. "Calculation of losses in current-conducting screen in sealed machines and devices due to loose packing of magnets in half-clutches of magnetic clutch." Chemical and Petroleum Engineering 47, no. 5-6 (September 2011): 392–97. http://dx.doi.org/10.1007/s10556-011-9480-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Cruze, Daniel, Hemalatha G, S. Vincent Sam Jebadurai, Sarala L, Tensing D, and S. S. Judith Emiliah Christy. "A Review on the Magnetorheological Fluid, Damper and Its Applications for Seismic Mitigation." Civil Engineering Journal 4, no. 12 (December 24, 2018): 3058. http://dx.doi.org/10.28991/cej-03091220.

Full text

Abstract:

Magnetorheological (MR) fluids and dampers have wide advances as smart materials because of its unique properties, notably, viscosity increases in the presence when magnetic field applied MR Fluids composed of three key components, including carrier fluid, surfactants and metal particles. The major applications of MR Fluids are in brakes, dampers, journal bearings, fluid clutches, pneumatic artificial muscles, aerospace etc. where electrical energy is converted to mechanical energy (Damping Force) in a controlled manner. Within a few milliseconds the fluid converts from liquid to semi solid state. Over the years, researchers were concerned on the ways to enhance the modelling precision. Though the proposed Dynamic models of MR Dampers represent displacement and force behaviour. In this review paper, the advances of MR Fluids, MR Damper, Damper Models, Energy harvesting and their applications for seismic resistance of structures are briefly discussed in the present study.

APA, Harvard, Vancouver, ISO, and other styles

22

Ginder, John M. "Behavior of Magnetorheological Fluids." MRS Bulletin 23, no. 8 (August 1998): 26–29. http://dx.doi.org/10.1557/s0883769400030785.

Full text

Abstract:

In the absence of an applied magnetic field, magnetorheological (MR) fluids typically behave as nearly ideal Newtonian liquids. The application of a magnetic field induces magnetic dipole and multipole moments on each particle. The anisotropic magnetic forces between pairs of particles promote the head-to-tail alignment of the moments and draws the particles into proximity. These attractive interparticle forces lead to the formation of chains, columns, or more complicated networks of particles aligned with the direction of the magnetic field. When these structures are deformed mechanically, magnetic restoring forces tend to oppose the deformation. Substantial field-dependent enhancements of the rheological properties of these materials result, as demonstrated in Figure 1.The myriad potential applications of MR and electrorheological (ER) fluids provide considerable motivation for research on these materials. The availability of fluids with yield stresses or apparent viscosities that are controllable over many orders of magnitude by applied fields enables the construction of electromechanical devices that are engaged and controlled by electrical signals and that require few or no moving parts. Potential automotive applications include electrically engaged clutches for vehicle powertrains and engine accessories as well as semiactive shock absorbers that can adapt in real time to changing road conditions. Semiactive dampers for rotorcraft control surfaces are among the potential aerospace applications. The critical need to mitigate the structural vibrations of large structures has led to the construction of large, high-force MR-fluid-based dampers. A promising application in manufacturing processes is the computer-aided polishing of precision optics in which abrasive particles are suspended in an MR fluid so that the polishing rate is determined in part by the strength of an applied magnetic field.

APA, Harvard, Vancouver, ISO, and other styles

23

Skalski, Paweł, and Klaudia Kalita. "Role of Magnetorheological Fluids and Elastomers in Today’s World." Acta Mechanica et Automatica 11, no. 4 (December 1, 2017): 267–74. http://dx.doi.org/10.1515/ama-2017-0041.

Full text

Abstract:

AbstractThis paper explains the role of magnetorheological fluids and elastomers in today’s world. A review of applications of magnetorheological fluids and elastomers in devices and machines is presented. Magnetorheological fluids and elastomers belong to the smart materials family. Properties of magnetorheological fluids and elastomers can be controlled by a magnetic field. Compared with magnetorheological fluids, magnetorheological elastomers overcome the problems accompanying applications of MR fluids, such as sedimentation, sealing issues and environmental contamination. Magnetorheological fluids and elastomers, due to their ability of dampening vibrations in the presence of a controlled magnetic field, have great potential present and future applications in transport. Magnetorheological fluids are used e.g. dampers, shock absorbers, clutches and brakes. Magnetorheological dampers and magnetorheological shock absorbers are applied e.g. in damping control, in the operation of buildings and bridges, as well as in damping of high-tension wires. In the automotive industry, new solutions involving magnetorheological elastomer are increasingly patented e.g. adaptive system of energy absorption, system of magnetically dissociable [hooks/detents/grips], an vibration reduction system of the car’s drive shaft. The application of magnetorheological elastomer in the aviation structure is presented as well.

APA, Harvard, Vancouver, ISO, and other styles

24

Güth, Dirk, Markus Schamoni, and Jürgen Maas. "Magnetic fluid control for viscous loss reduction of high-speed MRF brakes and clutches with well-defined fail-safe behavior." Smart Materials and Structures 22, no. 9 (August 27, 2013): 094010. http://dx.doi.org/10.1088/0964-1726/22/9/094010.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Pitskhelauri, David I., Alexander N. Konovalov, Georgy A. Shekutev, Nikolay B. Rojnin, Igor A. Kachkov, Dmitry Y. Samborskiy, Alexander Z. Sanikidze, and Dmitry N. Kopachev. "A novel device for hands-free positioning and adjustment of the surgical microscope." Journal of Neurosurgery 121, no. 1 (July 2014): 161–64. http://dx.doi.org/10.3171/2014.3.jns12578.

Full text

Abstract:

The authors have developed a novel device, which they have named Mari, that allows hands-free utilization of the surgical microscope. The device is attached to the eyepieces of a multifunction counterweight-balanced surgical microscope and consists of a metallic holder with supportive plates that facilitate interaction between the device and surgeon's head. On the holder are installed 1) an electric switch, which allows the surgeon to release the microscope's magnetic clutches, allowing movement of the microscope along the x, y, and z axes as well as the rotational and diagonal ones, and 2) a joystick at the level of the surgeon's mouth for adjustment of focus and zoom. The authors report on the initial experience with the use of the device at the Burdenko Neurosurgery Institute, where the senior author used it in approximately 600 procedures between 2006 and 2012. The surgeries ranged in difficulty and in duration (from 20 minutes to 7 hours, median 2.5 hours). Use of the Mari device resulted in increased accuracy of the surgical manipulations and a reduction in the duration of surgery.

APA, Harvard, Vancouver, ISO, and other styles

26

Hegger, Christian, and Jürgen Maas. "Smart sealing for magnetorheological fluid actuators." Journal of Intelligent Material Systems and Structures 30, no. 5 (February 12, 2018): 689–700. http://dx.doi.org/10.1177/1045389x17754261.

Full text

Abstract:

In automotive and industrial environments, magnetorheological fluid–based applications such as clutches and brakes are gaining continuously more attention. However, one of the serious challenges for their application are drag losses at high shear rates. While viscous losses of the magnetorheological fluid can be eliminated by a magnetorheological fluid movement control based on partially filled shear gaps, commonly utilized sealings also cause drag losses based on dry friction. To overcome these challenges, in this contribution, a novel design of sealings for magnetorheological fluid–based actuators is introduced eliminating the adverse drag losses. The intended sealing is based on the magnetorheological fluid itself, positioned in a sealing gap and exposed to a well-defined magnetic stray field of a permanent magnet to prevent any leakage. To eliminate drag torques, a superimposed functional principle with the magnetorheological fluid movement control is utilized. An analytical and a simulation-based modeling approach is proposed describing the torque behavior of the magnetorheological fluid sealing. In experimental investigations, the drag torque-free operation is proven by showing a lossless operation above a defined rotational speed.

APA, Harvard, Vancouver, ISO, and other styles

27

Kong, H. S., and M. F. Ashby. "Friction-Heating Maps and Their Applications." MRS Bulletin 16, no. 10 (October 1991): 41–48. http://dx.doi.org/10.1557/s0883769400055822.

Full text

Abstract:

Friction is often a nuisance, but it can be useful too. Brakes, clutches, and tires rely on it, of course, though the inevitable fractional heat remains a problem. Other applications use frictional heat: friction cutting and welding, skiing, skating, and curling. The damage to magnetic disks caused by head-disk contact and the striking of matches are also examples.This article illustrates a framework where the thermal aspects of friction can be analyzed in an informative way. It uses a unified approach to the calculation of flash and bulk heating, and a helpful diagram—the frictional temperature map—to display the results. The method is approximate, but the approximations have been carefully chosen and calibrated to give precision adequate to most tasks, and the gain in simplicity is great.The symbols used in this article are defined in Table I.When two contacting solids 1 and 2, pressed together by a normal force F, slide at a relative velocity ν and with coefficient of friction ü, heat is generated at the surface where they meet. The heat generated, q, per unit of nominal contact area, An, per second isThe heat flows into the two solids, partitioned between them in a way that depends on their geometry and thermal properties. Figure 1 shows one geometry commonly used for laboratory tests: the pin-on-disk configuration. The pin is identified by the subscript 1, the disk by subscript 2. Solid 1 can have properties which differ from those of solid 2.

APA, Harvard, Vancouver, ISO, and other styles

28

Chang, Chun-Hsin, Hsuan-Yung Chang, Yi-Hsuan Hung, Chien-Hsun Wu, and Ji-Jia Xu. "System Designs and Experimental Assessment of a Seven-Mode Vehicle-Oriented Hybrid Powertrain Platform." Energies 13, no. 8 (April 23, 2020): 2104. http://dx.doi.org/10.3390/en13082104.

Full text

Abstract:

This study developed a mechatronics platform for a seven-mode vehicle-oriented powertrain system. The innovative “all-in-one” concept was used for flexibly arranging various power or energy sources to be combined for various hybrid powertrains. Hence, it significantly reduces the cost and human resources for evaluating new-type power systems or developed vehicle control strategies on the same experimental platform. In this study, three power sources were chosen for providing hybrid power. The first source is a 125 c.c. spark ignition (SI) engine, where a controllable throttle valve governs the output torque, while a fuel meter measures the consumed fuel. The second one is a 1.5kW hub motor, where a motor control unit (MCU) and a 48V lithium battery pack properly provide the required electric power. The third source is an air engine, where a 220V air compressor and other components provide the pneumatic power. For the experimental platform, a developed Matlab/Simulink package receives the measured signals and sends the control commands to actuators. Through the on/off state control of three controllable e-clutches, three single-source modes, three dual-source modes, and one three-source mode (3+3+1) can be conducted. A 1.1kW/24V magnetic powder brake emulates the road load. The results show that three dual-source modes and a three-source mode were successfully operated. The efficiencies, torques and speeds, mass flow rates, etc. have been measured and calculated. This platform is aimed for the research fields of green energies, advanced powertrains, and power flow management.

APA, Harvard, Vancouver, ISO, and other styles

29

Saini, Dr Rahul, Mr Naveen Kumar, and Desh Deepak Ashutosh Kushwaha Ambrish Pandey. "Multi-Operational Machining and Controlling with the Help of Electro-Magnetic Clutch." International Journal of Trend in Scientific Research and Development Volume-3, Issue-3 (April 30, 2019): 1018–21. http://dx.doi.org/10.31142/ijtsrd23181.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Wang, Cheng, and Shan Zhen Xu. "Influence Analysis of the Magnetic Properties of the Materials on the Magnetic Powder Clutch Characteristics." Advanced Materials Research 590 (November 2012): 111–15. http://dx.doi.org/10.4028/www.scientific.net/amr.590.111.

Full text

Abstract:

The torque transmission capacity within a range of the structure is the main factor that limit the application of the magnetic powder clutch in the vehicle transmission field. In order to increase the torque transmitting characteristics of the magnetic powder clutch, the analysis model of the magnetic powder clutch was established with finite element numerical calculation method based on the depth analysis its operating principle, which focused on the study of the influence of the magnetic property of the magnetic powder and magnetic circuit material on the magnetic powder clutch performance. The research results showed that the greater of the saturated magnetic induction and the magnetic permeability of the magnetic powder and magnetic circuit material are, the better of the torque transmitting characteristics of the magnetic powder clutch is.

APA, Harvard, Vancouver, ISO, and other styles

31

Zhang, Lan Chun, Shao Yi Bei, and Guo Qing Li. "Study on Dynamic Shifting of Power Split CVT (PSCVT)." Advanced Materials Research 580 (October 2012): 28–32. http://dx.doi.org/10.4028/www.scientific.net/amr.580.28.

Full text

Abstract:

In order to study the shift control of power split continuously variable transmission (PSCVT), the integrated shift dynamic models for the set of engine, magnetic powder clutch and transmission are established. The shift simulation shows that the magnetic powder clutch connecting condition can be adjusted and the shifting quality can be improved by means of controlling magnetic powders clutch field current, which at last result in the improvement of vehicle performance.

APA, Harvard, Vancouver, ISO, and other styles

32

Ji, Hai Feng, Chun Fu Gao, Xin Sheng He, and Guang Zhang. "Comparison of Affecting Factors on the Shear Stress Output of Cylinder-Typed MRF Clutch." Advanced Materials Research 1094 (March 2015): 453–57. http://dx.doi.org/10.4028/www.scientific.net/amr.1094.453.

Full text

Abstract:

With the purpose of studying the main influence on the cylinder-typed magneto-rheological fluid (MRF) clutch, the relationship between the output of shear stress and its affecting factors is presented in this paper; through theoretical derivation from the Bingham Model and the cylinder-typed shear model, the stress born by the MRF in the clutch is analysed, and the affecting factors on the clutch is also simulated and verified through experiments. The study shows that as the magnetic field strengthens, the shear stress of the cylinder-typed MRF clutch grows linearly, with proportionality constant at 0.162; the increase of shear rate, relevant to the magnetic field strength, makes little difference to the torque output, with proportionality constant at 0.00026B. The results indicate that mechanical-electrical integration of clutch devices can be achieved through the control of magnetic field output of the electromagnet.

APA, Harvard, Vancouver, ISO, and other styles

33

Wu, Xiao Gang, Rui Xue Liu, and Nan Nan Ding. "Genetic Algorithm Tuning PID Control of Magnetic Powder Clutch." Advanced Materials Research 712-715 (June 2013): 2216–22. http://dx.doi.org/10.4028/www.scientific.net/amr.712-715.2216.

Full text

Abstract:

The linear relationship between transfer torque and exciting current of magnetic powder clutch easily achieves to the electronic control and are widely used on the passenger cars. This article established the drive circuit model based on the experiments of excitation current transfer torque for magnetic powder clutch. Aiming at the nonlinear problems of the drive circuit, the article designed a current controller of magnetic powder clutch, which used method of genetic algorithms tuning PID control parameter. The simulation results showed that the drive control dynamic based on the genetic algorithms tuning PID was better than the traditional PID control, and the system had better adaptability.

APA, Harvard, Vancouver, ISO, and other styles

34

Huang, Jin, Li Juan Fu, and Li Rong Zhong. "Analysis of a Magnetorheological Transmission for Fan Clutch." Advanced Materials Research 287-290 (July 2011): 173–77. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.173.

Full text

Abstract:

A magneto-rheological (MR) fan clutch is a device that transmits torque by the shear stress of the MR fluids. In this paper, the torque transmitted by MR fluids is analyzed to compute the torque transmission ability in the disk-type MR fan clutch. The results show that with the increase of the applied magnetic field, the torque developed by MR fluids goes up rapidly. The driven speed of the fan clutch can be adjusted continuously by changing the applied magnetic field.

APA, Harvard, Vancouver, ISO, and other styles

35

Wang, Jiu Hua, Lian Cheng Ren, and Zhen Zhen Lei. "Shear Transmission of Magnetorheological Fluid in Fan Clutch." Applied Mechanics and Materials 233 (November 2012): 84–87. http://dx.doi.org/10.4028/www.scientific.net/amm.233.84.

Full text

Abstract:

A magneto-rheological (MR) fan clutch is a device that transmits torque by the shear stress of the MR fluids. In this paper, Bingham model is used to describe the constitutive characteristics of MR fluids subject to an applied magnetic field. The operational principle of the MR clutch is introduced. The torque transmitted by MR fluids is analyzed to compute the torque transmission ability in the MR clutch. The results show that with the increase of the applied magnetic field, the torque developed by MR fluids goes up rapidly.

APA, Harvard, Vancouver, ISO, and other styles

36

Olszak, Artur, Karol Osowski, Zbigniew Kesy, and Andrzej Kesy. "Investigation of hydrodynamic clutch with a magnetorheological fluid." Journal of Intelligent Material Systems and Structures 30, no. 1 (October 12, 2018): 155–68. http://dx.doi.org/10.1177/1045389x18803463.

Full text

Abstract:

This article presents the results of experimental investigations and simulations for a new design of a hydrodynamic clutch with a magnetorheological working fluid. The concept of magnetorheological fluid applications to improve the performance of a hydrodynamic clutch can be realized using resistant flow control inside a hydrodynamic clutch channel by changing the fluid shear stress with magnetic fields. The increase in the shear stress of a working fluid under a magnetic field causes an increase in the pressure drop in the channels, an increase in the flow losses, and a decrease in the transmitted power. Moreover, the steady-state and dynamic characteristics of the clutch are presented and the relations that occur between the design parameters are shown.

APA, Harvard, Vancouver, ISO, and other styles

37

Sapsalev, A. V., V. V. Bogdanov, M. A. Dybko, and O. B. Davydenko. "Structural Modeling of a Magnetic Clutch." Russian Engineering Research 40, no. 2 (February 2020): 101–5. http://dx.doi.org/10.3103/s1068798x20020173.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Zhao, Dong Mei, and Xue Peng Liu. "The Design of Magnetorheological Fluid in the Auto-Press Clutch." Advanced Materials Research 460 (February 2012): 222–25. http://dx.doi.org/10.4028/www.scientific.net/amr.460.222.

Full text

Abstract:

Magnetorheological fluid basic working model and calculation model is firstly introduced. Then the auto-press clutch dynamics theory is analyzed. Clutch magnetic circuit is analyzed by ANSYS software, which proves the feasibility of this design

APA, Harvard, Vancouver, ISO, and other styles

39

Singh, Anurag, Manish Kumar Thakur, and Chiranjit Sarkar. "Design and development of a wedge shaped magnetorheological clutch." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 234, no. 9 (June 14, 2020): 1252–66. http://dx.doi.org/10.1177/1464420720931886.

Full text

Abstract:

This paper presents a novel drum magnetorheological clutch design having a wedge shaped boundary. The converging film formed due to the direction of motion of the magnetorheological clutch and the inclination of the wedge planes helps to produce the pressure generating mechanism in the magnetorheological grease film. The resistance force developed due to this mechanism in the proposed case exceeds that of the conventional drum clutch. The proposed wedge shaped drum magnetorheological clutch consists of bimetallic discs made up of aluminium and mild steel. Mild steel disc has a certain number of inclined sliders shaped like a wedge at its boundary, which is immersed in the magnetorheological grease. The yield stress of the magnetorheological grease varies as a function of the magnetic field created by electric current passing through the electromagnet. Bingham model has been employed in the present study to analyse theoretically the torque generated by wedge-shaped drum magnetorheological clutch. The proposed magnetorheological drum clutch with wedge shaped boundary and conventional drum clutch have been designed and fabricated with similar material parameters and magnetic circuits. The experiment has been performed for the different current values (0 A, 0.25 A and 0.52 A). Torque results are plotted and compared for both cases. Experimental results suggest that the proposed wedge shaped drum magnetorheological clutch produces more torque than the conventional drum magnetorheological clutch, and thus it has better performance.

APA, Harvard, Vancouver, ISO, and other styles

40

Saini, Dr Rahul, Naveen kumar, Ambrish Kumar Pandey, Ashutosh Khuswaha, and Desh Deepak. "Multi-Functional Machine with Electro-Magnetic Clutch." International Journal of Civil, Mechanical and Energy Science 5, no. 3 (2019): 1–6. http://dx.doi.org/10.22161/ijcmes.5.3.1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Krasil’nikov, A. Ya, and A. A. Krasil’nikov. "Torque determination for a cylindrical magnetic clutch." Russian Engineering Research 29, no. 6 (June 2009): 544–47. http://dx.doi.org/10.3103/s1068798x09060045.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Li, Gang, Yu Sun, and Cheng Bin Du. "Development of a Magneto-Rheological Fluid Tension Control Device." Key Engineering Materials 419-420 (October 2009): 225–28. http://dx.doi.org/10.4028/www.scientific.net/kem.419-420.225.

Full text

Abstract:

Based on the characteristics of magneto-rheological fluid, a new type of transmission device has been developed in this paper, in which output torque can be controlled accurately by adjusting electric current. It can be applied to replace magnetic particle clutch widely used at present to achieve tension control in some small-sized winders. A structure design of prototype has been proposed. By using the Bingham plastic constitutive model, the output torque of the device has been derived. Electromagnetic finite element analysis has been employed to simulate the magnetic circuit of this magneto-rheological fluid tension control device. It is shown that this magneto-rheological fluid tension control transmission has its significant advantages comparing with traditional magnetic particle clutch. The new one can produce higher controllable torques, and may be applied widely in the future.

APA, Harvard, Vancouver, ISO, and other styles

43

Kavlicoglu, Barkan, Faramarz Gordaninejad, Cahit Evrensel, Alan Fuchs, and George Korol. "A Semi-Active, High-Torque, Magnetorheological Fluid Limited Slip Differential Clutch." Journal of Vibration and Acoustics 128, no. 5 (March 23, 2006): 604–10. http://dx.doi.org/10.1115/1.2203308.

Full text

Abstract:

The design, development, and performance characterization of a magnetorheological (MR) fluid clutch for automotive limited slip differential (LSD) applications is presented in this study. The controllability of MR fluids provides an adjustable torque transmission and slippage for the LSD application. Three-dimensional electromagnetic finite element analysis (FEA) is performed to optimize the magnetic circuit and clutch design. Based on the results obtained from the FEA, the theoretical torque transfer capacity of the clutch is predicted utilizing Bingham-Plastic constitutive model. The clutch is characterized at different velocities and electromagnet electric input currents. Both the torque transfer capacity and the response time of the clutch were examined. It was demonstrated that the proposed MR fluid LSD clutch is capable of transferring controllable high torques with a fast response time.

APA, Harvard, Vancouver, ISO, and other styles

44

Leong, Foo-Hong, Nan-Chyuan Tsai, and Hsin-Lin Chiu. "Infinite-stage magnetic clutch for shaft speed amplification." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 231, no. 1 (August 9, 2016): 193–204. http://dx.doi.org/10.1177/0954406215616654.

Full text

Abstract:

An innovative design of magnetic coupler for shaft speed amplification is proposed and verified by experiments. The structure of proposed magnetic coupler is similar to an infinite-stage gearbox. In addition, the mathematical model of flux density is derived to look into the equation of adjustable gear ratio and effect of speed amplification. Moreover, two sets of experiments, namely verification of gear ratio and observation of stall phenomenon, are built up to examine the capability and drawback of the proposed variable-gear-ratio magnetic coupler. Three types of gear ratio are presented by theoretically analysis at first and then examined by experiments. The gear ratios for these three specific types between the input and output rotors are 4.75, 5.75, and 10.5, respectively. That is, the rotational speed of the output rotor can be precisely and realistically amplified. Besides, in order to reduce the torque inertia of outer rotor, a ferrite bush is inserted to the inner side of the core rotor to decrease the flux density at air gap. On the other hand, the overlapped area of permanent magnets, which are attached onto the inner rotor and outer rotor, has to be appropriately chosen. The smaller the overlapped area, the weaker is the magnetic attractive force at air gap. As long as these two modifications (an inserted ferrite bush and the aforesaid overlapped area) are validated, the torque inertia of outer rotor can be significantly reduced. Accordingly, the required power to rotate the outer rotor can be greatly reduced if the overlapped depth is shortened. However, insufficient overlapped depth between the high-speed rotor and low-speed rotor will bring about stall phenomenon caused by the magnetic attractive force between the high-speed rotor and the low-speed rotor being weaker than the start-up torque inertia. In other words, the reduced overlapped depth can also reduce the start-up torque inertia but stall phenomenon may easily occur relatively.

APA, Harvard, Vancouver, ISO, and other styles

45

Krasil'nikov, A. Ya, and A. A. Krasil'nikov. "Calculating the Torque in an End Magnetic Clutch." Chemical and Petroleum Engineering 41, no. 7-8 (July 2005): 383–87. http://dx.doi.org/10.1007/s10556-005-0125-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Krasil’nikov, A. Ya, and A. Yu Politov. "Centrifugal Extractor with Magnetic Clutch for Chemical Productions." Chemical and Petroleum Engineering 49, no. 7-8 (November 2013): 506–10. http://dx.doi.org/10.1007/s10556-013-9782-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Tsai, Nan-Chyuan, Chi-Ting Yeh, and Hsin-Lin Chiu. "Linear magnetic clutch to automatically control torque output." ISA Transactions 76 (May 2018): 224–34. http://dx.doi.org/10.1016/j.isatra.2018.03.020.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Meng, Wei Jia, Zhan Wen Huang, Yan Ju Liu, Xiao Rong Wu, and Yi Sun. "Structural Optimization Design of MR Fluid Clutch." Materials Science Forum 546-549 (May 2007): 1673–76. http://dx.doi.org/10.4028/www.scientific.net/msf.546-549.1673.

Full text

Abstract:

Magnetorheological (MR) fluids are suspensions of micron sized ferromagnetic particles dispersed in varying proportions of a variety of non-ferromagnetic fluids. MR fluids exhibit rapid, reversible and significant changes in their rheological (mechanical) properties while subjected to an external magnetic field. In this paper, a double-plate magneto-rheological fluid (MRF) clutch with controllable torque output have been designed. Electromagnetic finite element analysis is used to optimize the design of the clutch by using the commercial FEA software ANSYS.

APA, Harvard, Vancouver, ISO, and other styles

49

Yang, Sheng Qiang, Wen Hui Li, Hong Ling Chen, and Jin Yu Guo. "The Design and Simulation of the Magnetic Field Formation Components Based on the Technology of Electro Permanent Magnet." Key Engineering Materials 579-580 (September 2013): 781–86. http://dx.doi.org/10.4028/www.scientific.net/kem.579-580.781.

Full text

Abstract:

As a typical kind of surface finishing technology, magnetic abrasive finishing has unique advantages in finishing effect, efficiency and application, it occupies a very important position and has huge potential application value. As the core component of the magnetic abrasive finishing, the magnetic field formation components have a direct impact on the finishing effect and efficiency. Electro permanent magnetic field formation components used in magnetic abrasive finishing are put forward based on the characteristics of electro permanent magnet and its application in crane and clutch. Analyzing the main performance and characteristics of the magnetic filed formation components and determining the overall scheme according to the total requirements of magnetic filed formation components. Analyzing the feasibility of the electro permanent magnetic filed formation components through the simulation and then forming the design method to further promote the industrialization process of magnetic abrasive finishing.

APA, Harvard, Vancouver, ISO, and other styles

50

Huang, Jin, Yan Yang, and Yue Huang. "Flow of the Magnetorheological Fluid in Disc-Type Clutch." Advanced Materials Research 740 (August 2013): 709–14. http://dx.doi.org/10.4028/www.scientific.net/amr.740.709.

Full text

Abstract:

Herschel-Bulkley model is used to describe the constitutive behavior of Magnetorheological (MR) fluids subject to an applied magnetic field. Based on the shear flow equation at the narrow gap, a theoretical analysis of the effect of the applied magnetic field on the viscoplastic flow between two parallel disks is presented. The expression for the velocity in viscoplastic flow is derived. The results indicate that the velocity profile of MR fluid in shear region is deeply dependent on the gradient of the pressure in the flow channel. For the negative pressure gradient value, the velocity peak value point tends to move toward the driven disc wall as absolute value of pressure gradient increases. However, the velocity peak value point tends to move toward the driving disc wall as absolute value of pressure gradient increases for the positive pressure gradient value.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!