Szczegóły publikacji
Opis bibliograficzny
Verification of magnetorheological shock absorber models with various piston configurations / Janusz Goldasz, Bogdan SAPIŃSKI // Journal of Intelligent Material Systems and Structures ; ISSN 1045-389X. — 2013 — vol. 24 no. 15, s. 1846–1864. — Bibliogr. s. 1862, Abstr.
Autorzy (2)
- Goldasz Janusz
- AGHSapiński Bogdan
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 76719 |
|---|---|
| Data dodania do BaDAP | 2013-10-11 |
| DOI | 10.1177/1045389X13479684 |
| Rok publikacji | 2013 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Intelligent Material Systems and Structures |
Abstract
In this study, a mathematical model of a monotube magnetorheological (MR) shock absorber is presented and verified with an emphasis on leakage flow mechanisms and their impact on the damping force output. The model can be used in shock absorber design studies as well as vehicle simulations. To copy the force increase with yield stress, the authors employed the generic biplastic Bingham model for capturing the hydraulic resistance of the annular flow path in the piston. Moreover, the authors considered the impact of high-speed losses, fluid chamber compressibility, cavitation, elastic deformation of cylinder, fluid inertia, floating piston inertia, gas chamber pressure and Coulomb friction between damper components and the cylinder. The presented MR shock absorber model of is verified against experimental data involving three prototype shock absorber units. One shock absorber unit was a conventional unit with only one annular flow path, the second one employed the thru-core flow bypass for force roll-off at low piston velocities. The third unit utilized a so-called flux bypass to lower the magnetic field strength in the annulus to initiate the flow of MR fluids at lower yielding pressures across the piston. The flux bypass was located in the annulus. Except for the bypass features, all units were identical. All secondary flow features affect on the damping force at low piston velocities in particular. The experiment covered all key flow regimes of MR shock absorber operation from low speed to high speed. The results show that the proposed approach is capable of capturing key characteristics across the examined range of piston velocities and coil current levels.