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RISS 인기검색어
- 검색키워드
- 저자 : Muhammad Hasibul Hasan (검색결과 2 건)
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Mohammad Meftahul Ferdaus,Muhammad Mahbubur Rashid,Muhammad Hasibul Hasan,Mohammed Ataur Rahman 대한기계학회 2014 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.28 No.9
Magnetorheological (MR) damper is one of the most advanced applications of semi active damper in controlling vibration. Due to itscontinuous controllability in both on and off state its practice is increasing day by day in the vehicle suspension system. MR damper’sdamping force can be controlled by changing the viscosity of its internal magnetorheological fluids (MRF). But still there are some problemswith this damper such as MR fluid’s sedimentation, optimal design configuration considering all components of the damper. In thispaper both 2-D Axisymmetric and 3-D model of MR Damper is built and finite element analysis is done for design optimization. Differentconfigurations of MR damper piston, MR fluid gap, air gap and Dampers housing are simulated for comparing the Dampers performancevariation. From the analytical results it is observed that among different configurations single coil MR damper with linear plastic airgap, top and bottom chamfered piston end and medium MR fluid gap shows better performance than other configurations by maintainingthe same input current and piston velocity. Further an experimental analysis is performed by using RD-8041-1 MR Damper. These resultsare compared with the optimized MR Damper’s simulation results, which are clearly validating the simulated results.
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M. M. Rashid,Md Meftahul Ferdaus,Muhammad Hasibul Hasan,Ataur Rahman 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.7
The magnetorheological (MR) damper is one of the utmost progressive applications of asemi-active damper. Uninterrupted controllabilityin both on and off state is an important factor of its plenitude application. Current research is attempting to make the damper more effectiveand efficient by minimizing the existing limitations such as MR fluid’s sedimentation, power consumption and temperature rising, anddesign optimization. We have broadly analyzed the optimization of MR dampers design with finite element simulation where various parametersof the MR damper have been considered for more accurate results. A prototype MR fluid has been prepared by coating the carbonyliron particles with xanthan gum to reduce sedimentation. The SEM and Turbiscan results noticeably verify the improved sedimentationstability. In addition, a power-saving MR damper model has been developed by finite element analysis using ANSYS software. Prolongedoperation raises the damper’s body temperature and degrades the performance. However, in this energy-saving MR damper modelthe temperature is not rising to a higher value compared to the conventional dampers, and consequently promotes damper efficiency.
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