Download or read book Study on Vibration Isolation Performance and Control Method of Magneto rheological Mounts written by Qing Yang and published by . This book was released on 2014 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vibration Isolation Using a Magneto rheological Squeeze flow Damper written by Jong Suk Yang and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Combined Shock and Vibration Isolation Through the Self powered Semi active Control of a Magnetorheological Damper in Parallel with an Air Spring written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Combining shock and vibration isolation into a single isolation system package is explored through the use of an air spring in parallel with a controlled magnetorheological fluid damper. The benefits of combining shock and vibration isolation into a single package is discussed. Modeling and control issues are investigated and test and simulation results are discussed. It is shown that this hybrid isolation system provides significantly increased performance over current state-of-the-art passive systems. Also explored is the feasibility of scavenging and storing ambient shipboard vibration energy for use in powering the isolation system. To date the literature has not adequately explored the direct design of a combined shock and vibration isolation system. As shock and vibration isolation are typically conflicting goals, the traditional approach has been to design separate shock and vibration isolation systems and operate them in parallel. This approach invariably leads to compromises in terms of the performance of both systems. Additionally, while considerable research has been performed on magnetorheological fluids and devices based on these fluids, there has been little research performed on the use of these fluids in devices that are subjected to high velocities such as the velocity seen by a ship exposed to underwater near-miss explosive events. Also missing from the literature is any research involving the scavenging and storage of ambient shipboard vibration energy. While the focus of this work is on the use of this scavenged energy to power the subject isolation system, many other uses for this energy can be envisioned. Experimental and analytical results from this research clearly show the advantages of this hybrid isolation system. Drop tests show that inputs as great as 167 g's were reduced to 3.42 g's above mount at 1.11 inches of deflection using a Velocity Feedback controller suggested by the author. When contrasted with typical test results with similar inputs, the subject isolation system achieved reductions in above mount accelerations of 300% and reductions in mount deflections of 200% over current state-of-the-art passive shipboard isolation systems.
Download or read book Control of a Uni Axial Magnetorheological Vibration Isolator written by Shuo Wang and published by LAP Lambert Academic Publishing. This book was released on 2011-09 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: The technologies of hybridization of vehicles have been proven to significantly improve the fuel economy and reduce the environmental pollution. These technologies combine additional power sources with a traditional internal combustion engine. In some other modern vehicles, advanced cylinder management is the means to reduce fuel consumption and emissions. While these advanced technologies aim at energy savings and preserving the environment they create additional noise, vibration and harshness (NVH) problem. Semi-active vibration isolation devices are preferred to address the problem due to their effectiveness and affordability. A magnetorheological (MR) fluid mount can provide effective vibration isolation for applications such as hybrid vehicles. The focus of the current study is on the design of a control system for the mixed mode MR fluid mount. Based on a model for the uni-axial MR mount a controller has been designed to achieve the lowest possible vibration transmissibility. The results of this research can shed some light on developing the control system for other effective isolation devices.
Download or read book Electrorheological Fluids and Magnetorheological Suspensions written by Georges Bossis and published by World Scientific. This book was released on 2002 with total page 906 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains up-to-date information on the state of the art of research and applications in electro- and magnetorheology. A total of 130 papers are presented in four sections. The first section is devoted to the various applications of ER and MR fluids, like polishing, microfluidics, vibration control, robots, shock absorbers and dampers, MR and ER valves. The second part deals with the experimental characterization as well as the theoretical prediction of the mesostructure resulting from field-induced phase separation. The dynamics of phase separation is also included in this section. The third section is about the material properties; it includes papers on new compositions of ER or MR fluids, polymer blends, magneto- or electroactive elastomers and gels. The last section, about physical mechanisms, presents experiments and theories on the rheology of the fluids and its connection with microhydrodynamics and the structure of field-induced aggregates.
Download or read book Electro rheological Fluids and Magneto rheological Suspensions written by Rongjia Tao and published by World Scientific. This book was released on 2011 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique volume presents the scientific progress, state-of-art technology, and thrust areas to be focused in electrorheology (ER) and magentorheology (MR). In the last couple of years, this area produced significant impacts on automobile industry, bridge and building construction, aerospace industry, and defense industry. Recent innovation in this area lead to new technology, which has great impact on energy production and energy conservation. This book includes all papers presented at the 12th International Conference on ER Fluids and MR Suspensions, held in Philadelphia, USA, August 16 to 20, 2010, providing a comprehensive overview of this flourishing area. It is an essential source of reference for chemists, engineers, physicists, and materials scientists. It is also suitable for science and engineering students.
Download or read book Electrorheological Fluids And Magnetorheological Suspensions Ermr 2001 Proceedings Of The Eighth International Conference written by G Bossis and published by World Scientific. This book was released on 2002-05-30 with total page 906 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains up-to-date information on the state of the art of research and applications in electro- and magnetorheology. A total of 130 papers are presented in four sections. The first section is devoted to the various applications of ER and MR fluids, like polishing, microfluidics, vibration control, robots, shock absorbers and dampers, MR and ER valves. The second part deals with the experimental characterization as well as the theoretical prediction of the mesostructure resulting from field-induced phase separation. The dynamics of phase separation is also included in this section. The third section is about the material properties; it includes papers on new compositions of ER or MR fluids, polymer blends, magneto- or electroactive elastomers and gels. The last section, about physical mechanisms, presents experiments and theories on the rheology of the fluids and its connection with microhydrodynamics and the structure of field-induced aggregates.
Download or read book Electro rheological Fluids And Magneto rheological Suspensions Proceedings Of The 12th International Conference written by Rongjia Tao and published by World Scientific. This book was released on 2011-05-26 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique volume presents the scientific progress, state-of-art technology, and thrust areas to be focused in electrorheology (ER) and magentorheology (MR). In the last couple of years, this area produced significant impacts on automobile industry, bridge and building construction, aerospace industry, and defense industry. Recent innovation in this area lead to new technology, which has great impact on energy production and energy conservation. This book includes all papers presented at the 12th International Conference on ER Fluids and MR Suspensions, held in Philadelphia, USA, August 16 to 20, 2010, providing a comprehensive overview of this flourishing area. It is an essential source of reference for chemists, engineers, physicists, and materials scientists. It is also suitable for science and engineering students.
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 A Novel Semi active Magnetorheological Mount for Vibration Isolation written by The Minh Nguyen and published by . This book was released on 2009 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, the higher price of fossil fuels and green house effects has been the motivating factors for the automotive industry to introduce more efficient vehicles. Today evolution in automobiles is mostly to reduce fuel consumption and emissions. Variable cylinder management has been employed in V6 & V8 engines to allow the vehicles to operate with only 3 or 4 active cylinders. Hybrid technologies including hybrid electric and emerging hydraulic hybrid equip the vehicles with additional power sources which work at higher efficiency than that of internal combustion engines. The proven advantages of the hybrid vehicles or variable cylinder management also come with challenging problem of noise, vibration and harshness (NVH). This issue has to be properly addressed in order for the technologies to find consumer acceptance. The NVH in modern vehicles is mainly due to the involvement of multiple power sources working in different modes and the switching among them. This feature can lead to shock and vibration over a wide range of frequencies. It has been proven that passive vibration isolators, e.g. elastomeric and hydraulic, are not sufficient to deal with this problem. Active mounts are effective, but they are expensive and can lead to stability problems. Research has shown that semi-active vibration isolators are as effective as active mounts while being significantly less expensive. In this study, a novel shock and vibration isolator in the form of a magnetorheological (MR) mount is introduced. MR fluids are smart fluids which respond to magnetic fields. Using these fluids it is possible to transform a passive hydraulic vibration isolator to a semi-active device one. The semi-active MR mount presented in this dissertation is unique because it utilizes the MR fluid in two configurations flow (or valve) and squeeze modes to mitigate shock and vibration over a wide range of frequencies. The new mount was designed following a thorough literature review of the semi-active and MR vibration isolation. A mathematical model of the mount was developed to represent the vibration isolation behavior of the system. The analytical model was numerically solved and simulated in MATLAB®. Simulation results were used to predict the performance of the mount and to evaluate the effect of design parameters on the mount behavior. A prototype MR mount was built based on the analytical model. The mount was experimentally evaluated. The experimental data was used to verify the model in predicting the mount characteristics. This study provided a fundamental understanding on the behavior of MR fluid in vibration isolation devices. The mount demonstrates effectiveness of the flow and squeeze modes when they are activated individually and in combination. The results of this research can lead to developing effective isolation devices for many different applications including hybrid and alternative fuel vehicles.
Download or read book Electro rheological Fluids Magneto rheological Suspensions And Associated Technology Proceedings Of The 5th International Conference written by W A Bullough and published by World Scientific. This book was released on 1996-07-11 with total page 791 pages. Available in PDF, EPUB and Kindle. Book excerpt: The theme of the above conference was the SYNERGY generated by the interaction of the different disciplines relevant to ERF and MRS investigations. To stimulate this theme, all lecture sessions included a mixture of papers — one session contained applications, methodology, particle dynamics, structure characteristics and whatever is germane to the objective of furthering the standing of the subject. ‘Lead-in’ lectures were given by experts who had not recently been able to explain their work to colleagues in their own discipline. They were also charged with justifying the relevance of their area of work to the ESF/MRS field as a whole.
Download or read book Proceedings of the 7th International Conference on Electro Rheological Fluids and Magneto Rheological Suspensions written by Rongjia Tao and published by World Scientific. This book was released on 2000 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrorheological (ER) and magnetorheological (MR) fluids, which can be transformed from the liquid state into the solid state in milliseconds by applying an electric or a magnetic field, are smart fluids having the potential to revolutionize several industrial sectors. The Seventh International Conference on Electrorheological Fluids and Magnetorheological Suspensions took place at a time when some MR and ER applications were beginning to appear on the market, making a notable impact on industries. Scientists and engineers in multidisciplinary areas came together to explore the state-of-the-art technology and identify thrust areas to be focused on.This volume of proceedings collects contributions from most leading experts in the field. It reviews the most recent MR and ER applications, discusses the materials technology, explores the basic science research on ER and MR fluids, and examines the novel properties of these fluids. It provides the most up-to-date and probably the best information about the area. It can serve as a stimulating and valuable reference for research workers and students in materials science, condensed matter physics, engineering, and chemistry. The valuable information not only reports on the leading edge of research and applications, but also provides an overview of the field.
Download or read book Electro rheological Fluids And Magneto rheological Suspensions Proceedings Of The 7th International Conference written by Rongjia Tao and published by World Scientific. This book was released on 2000-06-30 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrorheological (ER) and magnetorheological (MR) fluids, which can be transformed from the liquid state into the solid state in milliseconds by applying an electric or a magnetic field, are smart fluids having the potential to revolutionize several industrial sectors. The Seventh International Conference on Electrorheological Fluids and Magnetorheological Suspensions took place at a time when some MR and ER applications were beginning to appear on the market, making a notable impact on industries. Scientists and engineers in multidisciplinary areas came together to explore the state-of-the-art technology and identify thrust areas to be focused on.This volume of proceedings collects contributions from most leading experts in the field. It reviews the most recent MR and ER applications, discusses the materials technology, explores the basic science research on ER and MR fluids, and examines the novel properties of these fluids. It provides the most up-to-date and probably the best information about the area. It can serve as a stimulating and valuable reference for research workers and students in materials science, condensed matter physics, engineering, and chemistry. The valuable information not only reports on the leading edge of research and applications, but also provides an overview of the field.
Download or read book Magnetorheological Fluid Foam Vibration Isolation System for Nanosats written by Israel López Martínez and published by . This book was released on 2004 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Noise and Vibration Control on Ships written by Raymond Fischer and published by Springer Nature. This book was released on with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Twelfth International Conference on Adaptive Structures and Technologies written by Norman Wereley and published by CRC Press. This book was released on 2017-11-22 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: First Published in 2017. Routledge is an imprint of Taylor & Francis, an Informa company.
Download or read book Vibration Isolation written by John C. Snowdon and published by . This book was released on 1979 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
