Design and experimental evaluation a novel magneto-rheological brake with tooth-shaped rotor

2021 ◽  
Author(s):  
Van Bien Nguyen ◽  
Hiep Dai Le ◽  
Quoc Hung Nguyen ◽  
Do Qui Duyen ◽  
Do Huu Minh Hieu ◽  
...  
Keyword(s):  
Optimal Design ◽  
Power Consumption ◽  
Thin Wall ◽  
Element Analysis ◽  
Single Coil ◽  
Compact Size ◽  
Braking Torque ◽  
Working Principle ◽  
Magneto Rheological ◽  
Magnetic Poles

Abstract In this study, a novel magnetorheological brake (MRB) with tooth-shape rotor is developed. In this new MRB, traditional cylindrical rotor is replaced by a new one with tooth-shaped rotor. The teeth on the rotor act as multiple magnetic poles of the brake. Two magnetic coils are placed on side-housings of the brake to generate a mutual magnetic field of the MRB. The inner face of each side-housing has tooth shaped features as well. These tooth shaped features interact with the rotor teeth via magnetorheological fluid (MRF) medium. By using the tooth shaped rotor, more interface area between the rotor and the working MRF can be archived, which can improve performance characteristics of the proposed MRB such as compact size, low power consumption and high torque. After an introduction of state of the art of MRB development, the schematics and working principle of the MRB with tooth-shaped rotor is proposed. The modeling of the MRB is then derived based on magnetic finite element analysis (FEA) and Bingham rheological model of MRF. Optimal design of the MRB considering mass and braking torque of the MRB is then conducted. From the optimal design result, it is shown that the mass and power consumption of the proposed MRB are significantly smaller than those of previously developed ones. In details, at high value of the maximum braking torque (100Nm), the proposed MRB mass is only around 31.3% of the mass of the thin-wall single-coil and 42.6% of the mass of the thin-wall double coil MRB. In addition, at small values of the maximum braking torque (5Nm), power consumption of the proposed MRB is only around 33% of that of the thin-wall single-coil and 45.5% of that of the thin-wall double coil MRB. Experimental works on prototypes of the proposed MRB are then performed for validation.

Development of Magnetorheological Brake with Tooth-Shaped Disc for Small Size Motorcycle

2019 ◽  
Vol 889 ◽  
pp. 508-517
Author(s):  
Duc Thang Le ◽  
Ngoc Diep Nguyen ◽  
Duy Tuan Le ◽  
Ngoc Tuyen Nguyen ◽  
Van Vinh Pham ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Finite Element Analysis ◽  
Element Analysis ◽  
Braking Performance ◽  
Trapezoidal Shape ◽  
Braking Torque ◽  
New Type ◽  
Magneto Rheological ◽  
Magnetic Poles ◽  
Multiple Poles

In this research, a new type of magneto-rheological brake (MRB) is proposed for small size motorcycle. The proposed MRB consists of a rotor with multiple trapezoidal teeth acting at multiple magnetic poles of the brake. In order to generate a magnetic field for controlling braking torque, a magnetic coil is placed on each side-housing of the brake. The inner face of each side-housing also has trapezoidal shape mating with the trapezoidal teeth of the rotor via MRF layer. By applying countercurrents to the coils, a magnetic fluid is generated with some magnetic flux going across the MRF layer (MRF duct) between the rotor teeth and their mating poles on the housing. By using multiple poles with trapezoidal shape, a high braking torque of the brake is expected while the size of the brake is still kept to be compacted. After an introduction about the development of MRBs in automotive engineering, the configuration of the proposed MRB is presented and its braking torque is derived based on Bingham rheological model of MRF. The proposed MRB is then optimally designed based on finite element analysis (FEA). Its optimized MRB is then manufactured and its braking performance is experimentally investigated. The MRB is then installed in a prototype motorcycle and the field test of this prototype motorcycle integrated with the MRB is then conducted.

Optimal Design of an Hybrid Magnetorheological Brake for Middle-Sized Motorcycles

2011 ◽  
Vol 52-54 ◽  
pp. 371-377 ◽  
Author(s):  
Quoc Hung Nguyen ◽  
Jun Cheol Jeon ◽  
Seung Bok Choi
Keyword(s):  
Optimal Design ◽  
Magnetic Circuit ◽  
Optimization Procedure ◽  
Zero Field ◽  
Element Analysis ◽  
Mr Fluid ◽  
The Finite Element Analysis ◽  
Hybrid Concept ◽  
Braking Torque ◽  
Magneto Rheological

This research focuses on developing a new configuration and optimal design of magneto-rheological (MR) brake for a middle-sized motorcycle which can replace conventional drum-type brake. The proposed MR brake mechanism utilizes a hybrid concept of magnetic circuit (using both axial and radial magnetic flux) to generate braking force. In the optimization, the required braking torque, the temperature due to zero field friction of MR fluid, the mass of the brake system and all significant geometric dimensions are considered. After a brief introduction of the proposed MR brake configuration, the braking torque is derived based on Herschel-Bulkley rheological model of the MR fluid. The optimal design of the MR brake is then analyzed. An optimization procedure based on the finite element analysis (FEA) integrated with an optimization tool is used to obtain optimal geometric dimensions of the MR brake. From the results, discussions on the performance improvement of the optimized MR brake are described.

Design and investigation of a novel magnetorheological brake with coils directly placed on side housings using a separating thin wall

2021 ◽  
pp. 1045389X2199391
Author(s):  
Ngoc Diep Nguyen ◽  
Tan Tien Nguyen ◽  
Dai Hiep Le ◽  
Quoc Hung Nguyen
Keyword(s):  
Magnetic Circuit ◽  
Outer Part ◽  
Thin Wall ◽  
Improve Performance ◽  
Element Analysis ◽  
Bingham Plastic ◽  
Braking Torque ◽  
Experimental Works ◽  
Magneto Rheological ◽  
Inner Parts

This research focuses on a new design to facilitate the manufacturing and improve performance of magneto-rheological brake (MRB). In this proposed MRB, the coils are directly placed on inner part of the side housing of the MRB and separated with the working MR fluid by a thin wall. The coils are then covered by the outer part of side housing to form a closed magnetic circuit. With this configuration, the coils do not directly contact with the MRF therefore a very small MRF gap size can be archived. In addition, the coils can be assembled and disassembled in the housing without separating the inner parts of the housing out of the disc. This makes a lot of convenience in fabrication, testing and maintenance of the MRB. After a review of MRB development, configuration of the proposed MRB is presented. Braking torque of the proposed MRB is then derived based on Bingham-plastic rheological model of MRF. Based on finite element analysis, optimal design of the proposed MRB is then conducted. The results are then compared with other types of MRB to figure out the advanced performance characteristics of the proposed one. In order to validate simulated results, prototypes of the proposed MRBs are manufactured and experimental works are then conducted.

Optimal design of Magneto-Rheological damper comparing different configurations by finite element analysis

2014 ◽  
Vol 28 (9) ◽  
pp. 3667-3677 ◽  
Author(s):  
Mohammad Meftahul Ferdaus ◽  
Muhammad Mahbubur Rashid ◽  
Muhammad Hasibul Hasan ◽  
Mohammed Ataur Rahman
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Optimal Design ◽  
Element Analysis ◽  
Magneto Rheological

Design and Analysis of Magneto-Rheological Fluid Brake (MRB)

2014 ◽  
Vol 984-985 ◽  
pp. 634-640
Author(s):  
J. Thanikachalam ◽  
G.S. Jinu ◽  
P. Nagaraj
Keyword(s):  
Finite Element ◽  
Material Properties ◽  
Design Procedure ◽  
Finite Element Models ◽  
Element Analysis ◽  
Smart Fluids ◽  
Working Medium ◽  
Braking Torque ◽  
Magneto Rheological ◽  
Definition Of

Magneto-rheological fluids are smart fluids displaying flow properties that can be adjusted by the introduction of magnetic fields. Conventional brakes require complex mechanical parts to dissipate energy, they are having more weight, produce less braking torque and the time of response is about 300-500 milliseconds and hence brake distance is high. A Magneto-rheological fluid brake is more efficient than conventional braking system in terms of the weight reduction, and response time. In this paper an improved MRB design is made, taking into account the temperature effects and more accurate description of the material properties as well. The proposed work is concerned with the development of a new Brake-by-wire system which employs MRF as working medium. The design procedure comprises the selection of materials for MRB, creating an analytical model for finding the braking torque produced by the MRB and Finite Element Analysis of the MRB. Finite element models are built to provide a means to analyze the performance of the magneto-rheological brake system. The formulation of these models (including the definition of the geometry, material properties, boundary conditions and meshing process, as well as necessary assumptions) are described. The results obtained with the finite element models are presented and analyzed using SolidWorks 2013®and COMSOL Multiphysics 4.3b®.

Development of magnetorheological brake with two coils placed on each side of the brake housing

2015 ◽  
Vol 37 (4) ◽  
pp. 263-273 ◽  
Author(s):  
Nguyen Quoc Hung ◽  
Nguyen Ngoc Diep ◽  
Nguyen Si Dzung
Keyword(s):  
Rheological Model ◽  
Magnetorheological Fluid ◽  
Performance Characteristics ◽  
Bingham Plastic ◽  
Compact Size ◽  
Braking Torque ◽  
Magneto Rheological

In this study a new configuration of magneto-rheological brake (MRB) with  two coils placed on each side of the brake housing is proposed, optimally  designed and evaluated. With this configuration, the MRB is expected to  provide higher braking torque, more compact size than traditional MRB. After  describing an introduction of the proposed configuration, braking torque of  the proposed MRB is analyzed based on Bingham-plastic rheological model of  magnetorheological fluid (MRF). The optimization of the proposed MRB, the  MRB with one coil placed on each side of the brake housing and the  conventional MRB is then performed considering maximum braking torque and  mass of the brakes Based on the optimal results, advanced performance  characteristics of the proposed MRB are figured out.

scholarly journals Development of a novel MR clutch featuring tooth-shaped disc

2021 ◽  
Vol 43 (3) ◽  
pp. 265-276
Author(s):  
Quoc Hung Nguyen ◽  
Bao Tri Diep ◽  
Duy Hung Nguyen ◽  
Van Bien Nguyen ◽  
Van Bo Vu ◽  
...  
Keyword(s):  
Air Gap ◽  
Experimental Results ◽  
Optimization Process ◽  
Introductory Part ◽  
Braking Torque ◽  
Experimental Works ◽  
Magneto Rheological ◽  
The Right ◽  
Magnetic Poles ◽  
Good Agreement

In this research, we focus on development of a new configuration of magneto-rheological fluid (MRF) based clutch (MRC) featuring a tooth-shaped disc with multiple teeth acting as multiple magnetic poles of the clutch. The tooth-shaped disc is placed in a clutch housing composed of the left housing and the right housing. The inner face the housing also has tooth shaped features mating with the teeth of the disc through the working MRF. Excitation coils are placed directly on stationary winding cores placed on both side of the clutch housing. An air gap of 0.3 mm is left between the housing and the winding cores to ensure the housing can freely rotate against the winding cores. After the introductory part, configuration of the MRC is introduced and the transmitted torque of the MRC is derived. An optimization process to minimize the overall volume of the proposed clutch, which can generate a required maximum braking torque, is then conducted. The optimal results show that the overall volume of the proposed MRC is significantly reduced compared to a referenced conventional MRC (0.159 m3 vs. 0.295 m3). A prototype of the proposed MRC is fabricated for experimental works and good agreement between the experimental results and simulated ones is archived.

Computation and Analysis of Disk-Type Magneto-Rheological Fluids Brake

2011 ◽  
Vol 291-294 ◽  
pp. 2667-2670 ◽  
Author(s):  
Feng Yan Yi ◽  
Cheng Ye Liu
Keyword(s):  
Magnetic Field ◽  
Theoretical Basis ◽  
Magnetic Field Intensity ◽  
Rotation Velocity ◽  
Calculation Formula ◽  
Disk Rotation ◽  
Braking Torque ◽  
Working Principle ◽  
Dynamic Yield ◽  
Magneto Rheological

On the basis of analyzing the structure and working principle of MRF brake, braking torque calculation formula of two disc MRF brake is established. Dynamic yield stress changing with the applied magnetic field is analyzed. Braking torque generated by MRF’s viscous changing with disk rotation velocity is also analyzed when magnetic field is zero. Furthermore; braking torque changing with magnetic field intensity is analyzed under a certain rotation velocity. The study provides a theoretical basis for MRF design.

Preparation of MR Fluid and Modeling of Magneto Rheological Fluid Brake (MRB)

2014 ◽  
Vol 592-594 ◽  
pp. 2254-2260
Author(s):  
J. Thanikachalam ◽  
G.S. Jinu ◽  
P. Nagaraj
Keyword(s):  
Design Procedure ◽  
Element Analysis ◽  
Mr Fluid ◽  
Mechanical Parts ◽  
Smart Fluids ◽  
Working Medium ◽  
Braking Torque ◽  
Magneto Rheological ◽  
Wire System ◽  
Selection Of

Magneto-rheological fluids are smart fluids displaying flow properties that can be adjusted by the introduction of magnetic fields. Conventional brakes require complex mechanical parts to dissipate energy, they are having more weight, produce less braking torque and the time of response is about 300-500 milliseconds and hence brake distance is high. A Magneto-rheological fluid brake is efficient than conventional braking system in terms of the weight reduction, and response time. In this paper MR fluid is prepard and an improved MRB design is made, taking into account the temperature effects and more accurate description of the material properties as well. The proposed work is concerned with the development of a new Brake-by-wire system which employs MRF as working medium. The design procedure comprises the selection of materials for MRB, creating an analytical model for finding the braking torque produced by the MRB and Finite Element Analysis of the MRB.

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