Magnetic accumulation of kinetic energy from a reciprocating mechanical system for a dynamic behaviour improvement
| Autor: | Michal Strnad, Jana Svobodová, Jan Valtera, Petr Žabka, Vítězslav Kubeš |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Acoustics and Ultrasonics Mathematical model Mechanical Engineering 02 engineering and technology Mechanics Condensed Matter Physics Kinetic energy 01 natural sciences Magnetic field Mechanical system Vibration Reciprocating motion 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Magnet 0103 physical sciences Magnetic damping 010301 acoustics |
| Zdroj: | Journal of Sound and Vibration. 451:138-146 |
| ISSN: | 0022-460X |
| Popis: | This paper presents a magnetic means of accumulating kinetic energy from a traversing rod (TR) used to guide yarn during winding processes on rotor spinning machines. A passive magnetic system for accumulating kinetic energy at the reversal points of reciprocating motion is introduced, and its unique repulsive magnetic force is described in relation to the specific traversing-motion characteristic. The magnetic damping force phenomenon and preconditions for its application in the machine are also defined and discussed. We also show magnetic field optimisation by means of pole-piece geometry modification to obtain a magnetic force characteristic that closely approximates the required motion characteristic. Thus, the efficiency of kinetic-energy accumulation at the reversal points of the reciprocating motion of the TR is increased. The utilisation of an eddy-current effect on the accumulator body to apply the magnetic-damping phenomenon for vibration reduction is also described. The results of this work demonstrate the promise of the system using modern rare-earth compound-based magnets applicable not only to the studied traversing system but also to various mechanical devices as a non-contact means of reducing deformation and vibration. The developed and experimentally verified mathematical models presented here represent a useful tool for further optimisation of specific applications in the field of mechanics. |
| Databáze: | OpenAIRE |
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