Download or read book Finite Element Based Modeling of Magnetorheological Dampers written by Kedar Malankar and published by . This book was released on 2006 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the current provided to a reasonably good amount, the force obtained was to a good extent. But it reaches saturation at around 2 amps. Thus for constraint or heat build up limitations, the second model could work the best among the three designs that we considered. For cases where higher electrical currents can be tolerated, model 2 would be the most advantageous design, since it provides the largest force among the three models.
Download or read book Optimal Design of Magnetorheological Dampers Constrained in a Specific Volume Using Response Surface Method written by Armin Hadadian and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book DEVELOPING NEW ANALYTICAL AND NUMERICAL MODELS FOR MR FLUID DAMPERS AND THEIR APPLICATION TO SEISMIC DESIGN OF BUILDINGS written by esteki Kambiz and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Insight into Magnetorheological Shock Absorbers written by Janusz Gołdasz and published by Springer. This book was released on 2014-12-27 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with magnetorheological fluid theory, modeling and applications of automotive magnetorheological dampers. On the theoretical side a review of MR fluid compositions and key factors affecting the characteristics of these fluids is followed by a description of existing applications in the area of vibration isolation and flow-mode shock absorbers in particular. As a majority of existing magnetorheological devices operates in a so-called flow mode a critical review is carried out in that regard. Specifically, the authors highlight common configurations of flow-mode magnetorheological shock absorbers, or so-called MR dampers that have been considered by the automotive industry for controlled chassis applications. The authors focus on single-tube dampers utilizing a piston assembly with one coil or multiple coils and at least one annular flow channel in the piston.
Download or read book Hybrid Magnetorheological Damper written by Izyan Iryani Mohd Yazid and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: A brief description about designing of Magnetorheological (MR) damper are described. MR dampers are semi-active suspension devices that use MR fluids to produce a controllable damper. The mechanical properties of the suspension can be controlled by adjusting the yield stress of the MR fluid. In this book, the design development for a new mixed mode MR damper with combination of shear and squeeze working modes was carried out. The magnetic field generated by electromagnetic coils in MR damper was analyzed using finite element method. The MR damper was designed and fabricated based on the simulation results. Combination of process parameters of working modes condition and applied current under quasi-static loadings were used in the experiments. Results, the unique damping characteristics of mixed mode MR damper was found where in general, a higher damping force has obtained in mixed mode than single mode. Eventually, the design of MR damper will provide an opportunity to study and consequently understand on how the MR fluids react to such operating condition in order to be realized in the MR damper.
Download or read book Magnetorheological Fluid Technology written by Seung-Bok Choi and published by CRC Press. This book was released on 2012-11-08 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetorheological Fluid Technology: Applications in Vehicle Systems compiles the authors' recent work involving the application of magnetorheological (MR) fluids and other smart materials in vehicles. It collects concepts that have previously been scattered in peer-reviewed international journals. After introducing the physical phenomena and prope
Download or read book Magnetorheology written by Norman Wereley and published by Royal Society of Chemistry. This book was released on 2014 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leading experts provide a timely overview of the key developments in the physics, chemistry and uses of magnetorheological fluids.
Download or read book Electrorheological Fluids And Magnetorheological Suspensions Ermr 2004 Proceedings Of The Ninth International Conference written by Kunquan Lu and published by World Scientific. This book was released on 2005-06-14 with total page 1013 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume covers the most recent progress of research work on electrorheological (ER) and magnetorheological (MR) industrial applications related to controllable damping, ER/MR fundamental mechanisms, and understanding the potential of new classes of field responsive materials.The proceedings have been selected for coverage in:• Materials Science Citation Index®• Index to Scientific & Technical Proceedings® (ISTP® / ISI Proceedings)• Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)• CC Proceedings — Engineering & Physical Sciences
Download or read book Design Simulation and Fabrication of a Lightweight Magneto Rheological Damper written by Soroush Sefidkar-Dezfouli and published by . This book was released on 2014 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mountain biking has significantly evolved recently, thanks to utilizing cutting-edge technologies in mountain bicycle design and fabrication. In this research we study development of a semi-active suspension system using magneto-rheological (MR) fluid dampers instead of conventional oil based shocks. MR dampers are devices with magnetic field dependent damping characteristics.Low power consumption, high controllability, quick response, and high durability are among the major features of MR dampers. In this work we first investigate the damping characteristics of MR dampers to find out if characteristics comparable to the conventional shocks used in mountain bikes can be achieved. To this end,experimental tests were performed on an off-the-shelf MR damper. The results indicate that damping characteristics similar to the ones used in mountain bikes can in fact be achieved using MR technology.However, requirements such as small weight and wide dynamic range have to be addressed in designing a MR damper for mountain bikes. These considerations are studied in this thesis by formulating a simple design followed by a constrained optimization problem and designing the damper accordingly. Utilizing Finite element modeling and simulation tools are further utilized to fine tune and optimize the design.A prototype MR damper is fabricated after the above design steps are carried out.
Download or read book Finite Element Magnetic Method for Magnetorheological Based Actuators written by Ubaidillah and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetorheological materials based actuators have been currently exciting research topic for more than half-decades. Some actuators have been developed based on magnetorheological fluids and elastomers such as dampers, brakes, haptic devices, clutches, mountings, etc. These devices have their exciting properties which are capable of changing characteristic based on the amount of magnetic flux applied to them. Due to this capability, they are usually called semi-active devices. These devices employ an electromagnetic coil for magnetic flux production. Therefore, during the design process, magnetostatic simulation using the finite element method magnetic is carried out to make a better magnetic circuit. This chapter will consider several discussions such as necessary magnetostatic using free software finite element method magnetic (FEMM); design consideration for the magnetic circuit of the device and case studies of several type simulation in magnetorheological materials based devices.
Download or read book Analysis and testing of modified hydraulic semi active damper by magneto rheological approach written by Khedkar Yashpal Marutirao and published by Book Rivers. This book was released on 2024-02-24 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the 10th International Conference on Electrorheological Fluids and Magnetorheological Suspensions written by Faramarz Gordaninejad and published by World Scientific. This book was released on 2007 with total page 843 pages. Available in PDF, EPUB and Kindle. Book excerpt: ERMR 2006 included invited speakers, technical presentations, poster presentations, and a student paper competition. At the conference banquet, Dr. David Carlson of Lord Corporation addressed the conference attendees and gave a stirring speech on the history of ER and MR fluids, as well as current and future applications. A unique feature of the ERMR Conferences is that they comprehensively cover issues ranging from physics to chemistry to engineering applications of ER and MR materials held in a general session to enhance the interaction between the scientists and engineers. The sessions in ERMR 2006 were organized based into two Symposia: a) Materials and b) Applications. Topics covered in the Materials Symposium included: mechanisms, preparation, and characterization of ER and MR materials. Topics covered in the Applications Symposium included: ER and MR devices, control systems, system integration, and applications. This structure was implemented in order to enable interaction between attending scientists and engineers in both the Materials Symposium and the Applications Symposium, and to enhance the free flow of ideas, and the potential collaborative research opportunities. Sample Chapter(s). Chapter 1: Transient Behavior of Electrorheological Fluids in Shear Flow (471 KB). Contents: The Physical Mechanism to Reduce Viscosity of Liquid Suspensions (R Tao); Polar Molecular Type Electrorheological Fluids (K Lu et al.); Yield Stress in Ferrofluids? (H Shahnazian & S Odenbach); The Effect of Dwell Time on the Rheological Behavior of MR Fluids (M Ahmadian & F D Goncalves); The Methods of Measuring Shear Stress of Polar Molecule Dominated ER Fluids (R Shen et al.); Electrosensitive Lubricants (E V Korobko et al.); Study on Characteristics of an Electrorheological Fluid Coupling (Y Meng et al.); On the Control of a MR Torque Transfer Device (M H Elahinia et al.); Comparison of ERF Clutch Designs (D J Ellam et al.); Examination of Throughflow in a Radial ERF Clutch (S M Chen et al.); Two-Layered Magnetic Fluid Sloshing in a Rectangular Container (S Yoshida et al.); Design of the High-Performance MR Brake and Its Characteristics (T Kikuchi et al.); and other papers. Readership: Mechanical engineers, electrical engineers, physicists, chemists, chemical engineers and materials scientists.
Download or read book Intelligent Robotics and Applications written by Jangmyung Lee and published by Springer. This book was released on 2013-08-23 with total page 767 pages. Available in PDF, EPUB and Kindle. Book excerpt: This two volume set LNAI 8102 and LNAI 8103 constitutes the refereed proceedings of the 6th International Conference on Intelligent Robotics and Applications, ICIRA 2013, held in Busan, South Korea, in September 2013. The 147 revised full papers presented were carefully reviewed and selected from 184 submissions. The papers discuss various topics from intelligent robotics, automation and mechatronics with particular emphasis on technical challenges associated with varied applications such as biomedical application, industrial automation, surveillance and sustainable mobility.
Download or read book Controllable Electrorheological and Magnetorheological Materials written by Seung-Bok Choi and published by Frontiers Media SA. This book was released on 2019-10-09 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design Optimization of Magneto rheological Damper with Improved Dispersion Stability written by Md Meftahul Ferdaus and published by . This book was released on 2015 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetorheological (MR) damper is one of the most advanced applications of semi active damper in controlling vibration. Due to its continuous controllability in both on and off state its practice is increasing day by day in the vehicle suspension system. MR damper's damping force can be controlled by changing the viscosity of its internal magnetorheological fluids (MRF). Still there are some problems with this damper such as MR fluid's sedimentation, optimal design configuration considering all components of the damper, power consumption and temperature rising etc. In this paper both 2-D Axisymmetric and 3-D models of MR Damper are built and finite element analysis is done widely for design optimization. Different configurations of MR damper piston, MR fluid gap, air gap and dampers housing are simulated for comparing the dampers performance variation. From the analytical results it is observed that among different configurations single coil MR damper with linear plastic air gap, top and bottom chamfered piston end and medium MR fluid gap shows better performance than other configurations by maintaining the same input current and piston velocity. Further a prototype MR fluid is developed experimentally where the carbonyl iron particles are coated with xanthan gum to reduce sedimentation and the experimental results are noticeably verifying the improved sedimentation stability. The performance of dampers' containing this new prototype MR fluid are observed by simulation models. Here the outcomes are obviously declaring damper improvement as they are delivering larger damping force compare to the MR damper with conventional fluid. In addition a power saving MR damper model has developed by finite element analysis using ANSYS software, this energy saving MR damper model is obviously showing the solution of damper's temperature rising problem. At last an experimental analysis is performed by using RD-8041-1 MR Damper. These results are compared with the optimized MR Damper's simulation results, which clearly validate the simulated results.
Download or read book Design and Implementation of Energy Generated Magneto rheological Damper for Vehicle Suspension Systems written by Raju Ahamed and published by . This book was released on 2015 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magneto rheological (MR) fluid based dampers are very promising for semi-active or adaptive suspension control system which is filled with MR fluid. Its huge advantages attract the researchers to use it in more advanced application. MR damper's damping force can be controlled by changing the viscosity of its internal magneto-rheological fluids (MRF). However the requirement of external power source is one of the major concerns. Self-powered MR damper is one of the recent advancement which is accomplished only for double ended MR damper. In this work an energy generated mono tube MR damper has been designed and investigated with power generation which has a huge demand in the vehicle suspension system. This damper combines the advantages of energy harvesting (reusing wasted energy) and MR damping (controllable damping force). This multifunctional integration would bring great benefits such as energy saving, size and weight reduction, lower cost, high reliability, and less maintenance for the MR damper systems. The proposed MR damper model consists permanent magnet and coil combination of energy generation. Two magnetic fields are induced inside this damper. One is in the outer coil of the power generator and another is the piston head coils. A 2-D Axisymmetric model of energy generated MR damper is developed in COMSOL Multiphysics where it is analyzed extensively by finite element method and its hardware model is tested by Universal Testing Machine (UTM). The complete magnetic isolation between these two fields is accomplished here, which can be seen in the finite element analysis and damper characteristic analysis. The energy generation ability of the MR damper model is tested by UTM and oscilloscope combination and the maximum output voltage is measured around 0.8 volts by oscilloscope. Finally, experimental dampers characteristic analysis is performed by using RD-8041-1 MR Damper. These results are compared with the hardware model experimental results, which clearly validate the hardware model damper characteristic.
Download or read book Finite Element Analysis of MR Elastomers in Steel Structures as Dampers with Seismic Loading written by Saurabh Singhal and published by . This book was released on 2017 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the Northridge earthquake of 1994, many steel structures collapsed as a result of the connection failures in the structure. After investigation, it was concluded that the connections in the steel structure, including the column base connection, have to be made stronger and to be able to dissipate energy during seismic motion. To facilitate that, a new kind of damper system having Magnetorheological Elastomers (MRE) as the damping material is proposed here. MRE was taken because of its ability to dissipate energy and provide extra stiffness when needed. The damper system along with the column base connection was then modeled, and modal, harmonic and transient analyses were performed on the model using Finite Element Analysis in ANSYS. The results showed that MRE successfully decreased the moment reaction at the connection, making it more reliable during strong earthquakes. The analyses were performed with prescribed loading by SAC, and El Centro ground motion, and in both the cases the designed damper system showed its capability of dissipating energy. It was also seen that with MRE as damper, the natural frequency of the connection can also be controlled, which can prove useful in certain cases. A parametric study was then conducted to see how the effect varies with different material and physical parameters of MRE.
