Internal magnetic field tests and magnetic field coupling model of a three-coil magnetorheological damper
| Autor: | Zhang Jie, Yan-Wei Xu, Ying-Qing Guo, Zhao-Dong Xu, Yang Yang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
020303 mechanical engineering & transports 0203 mechanical engineering Magnetic field coupling Electromagnetic coil Mechanical Engineering Acoustics General Materials Science 02 engineering and technology Magnetorheological damper 021001 nanoscience & nanotechnology 0210 nano-technology Magnetic field |
| Zdroj: | Journal of Intelligent Material Systems and Structures. 31:2179-2195 |
| ISSN: | 1530-8138 1045-389X |
| DOI: | 10.1177/1045389x20943948 |
| Popis: | Magnetorheological damper is a typical semi-active control device. Its output damping force varies with the internal magnetic field, which is a key factor affecting the dynamic performance of the magnetorheological dampers. Existing studies about the magnetic field of magnetorheological dampers are limited to theoretical analysis; thus, this study aims to experimentally explore the complicated magnetic field distribution inside the magnetorheological dampers with multiple coils. First, the magnetic circuit of a three-coil magnetorheological damper was theoretically analyzed and designed, and the finite element model of the three-coil magnetorheological damper was set up to calculate the magnetic induction intensities of the damping gaps in different currents and numbers of coil turns. A three-coil magnetorheological damper embedded with a Hall sensor was then manufactured based on the theoretical and finite element analysis, and internal magnetic field tests under different conditions were carried out to obtain the actual magnetic induction intensities. At last, the magnetic field coupling model of the three-coil magnetorheological damper was proposed by introducing a coupling coefficient to describe the complex magnetic field distribution due to the strong coupling effect of the three coils, and the results calculated by the proposed model agreed well with the finite element analysis and magnetic field test data. The proposed model lays a foundation for the optimal design of the magnetic circuit and the mathematical model of multi-coil magnetorheological dampers. |
| Databáze: | OpenAIRE |
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