Mathematical model of a novel small magnetorheological damper by using outer magnetic field
Source abstract
Abstract
In order to realize small loading and small damping, a mini Magneto-rheological fluid (MRF) damper is suggested by using new method of outer coils, and its physical model is established firstly. It was found that the landing force is only 1.74∼8N, the landing force is the third-order function with the current by polynomial fitting of the experimental data, which shows a force-current model. The results of force-displacement and force-velocity indicate that it has nonlinear hysteretic damping characteristics. Based on the new mini-mode principle and the damping characteristics, an improved nonlinear dynamics model is proposed, and its parameter expressions are obtained by parameter identification and regression fitting. Model curves fit well with experimental curves, and the improved model has fully demonstrated the dynamic characteristics of the mini-MRF damper. It will provide scientific method and physical model for the small MRF damper development.
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Research context
OpenAlex topics: Vibration Control and Rheological Fluids · Seismic Performance and Analysis · Structural Health Monitoring Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Central South University State Key Laboratory of High Performance Complex Manufacturing, School of Mechanical and Electronical Engineering, , Changsha, Hunan 410083, China
Funding
China High Technology R&D Program 973
References (29)
Show source-provided references
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