Parametric investigation for optimising the dynamic range of magnetorheological fluid dampers /
Magneto-rheological (MR) fluid technology has made it possible to develop reliable, revolutionary vibration control systems for a variety of commercial, medical and military applications. MR fluid dampers are enabled by remarkably versatile MR fluid technology. This allows the system to respond inst...
Saved in:
| Main Author: | |
|---|---|
| Format: | Thesis |
| Language: | English |
| Published: |
Kuala Lumpur :
Kuliyyah of Engineering, International Islamic University Malaysia,
2016
|
| Subjects: | |
| Online Access: | Click here to view 1st 24 pages of the thesis. Members can view fulltext at the specified PCs in the library. |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Magneto-rheological (MR) fluid technology has made it possible to develop reliable, revolutionary vibration control systems for a variety of commercial, medical and military applications. MR fluid dampers are enabled by remarkably versatile MR fluid technology. This allows the system to respond instantly and controllably to varying levels of vibration. Optimization of several design parameters is vital for the efficiency of MR dampers. However, the annular gap size of MR damper being an important parameter, has not been thoroughly investigated in the past. In this research, different models of MR damper were explored and categorized based on modelling techniques. The methods of dynamic modelling of MR dampers with regards to identification of parameters that influence the dynamic range of MR dampers has been presented. The influence of different parameters such as annular gap size of the MR damper, particle size and percentage of particle volume is explained. A novel MR damper has been simulated using COMSOL Multiphysics and the simulated results for the gap size parameter have been presented. Experimental investigations analyse the force-displacement characteristics of the MR damper based on varying frequency and current values. The optimum frequency of operation has been found to be 9 Hz, at which the damping force is the highest. The dynamic response time of the MR damper has been obtained experimentally. It is inferred from the study that the viscous stress of the MR fluid for the gap size parameter directly influences the dynamic range of MR fluid dampers. By tuning the dynamic range, the design of MR dampers for different applications can be further enhanced. This parametric investigation however, can be further improved in future for other parameters such as the particle size and particle ratio. |
|---|---|
| Physical Description: | xiv, 84 leaves : illustrations ; 30cm. |
| Bibliography: | Includes bibliographical references (leaves 77-83). |