A study on the efficiency improvement of a passive oil damper using an MR accumulator

Yun, Ye‐Rang; Lee, Seong-Min; Park, Myeoung-Kwan

doi:10.1007/s12206-010-0801-x

Cited by 7 publications

(2 citation statements)

References 10 publications

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“…The main idea used in this proposed variable stiffness damper is based on the concept of controlling the accumulator movement to give effect to the damping performance. In a single rod damper, an accumulator is needed because there is a volume difference between the compression and extension chamber of the damper cylinder [8]. As a result, there are excess volume of hydraulic oil that need to be stored outside the main cylinder volume when the compression movement occurs.…”

Section: Design Of Accumulator Controlled Mr Dampermentioning

confidence: 99%

New Variable Stiffness Damper with Magnetorheological-Based Accumulator Control

Hong

Imaduddin

Mazlan

et al. 2018

KEM

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This paper introduces a new design of variable stiffness damper using controlled accumulator filled with Magnetorheological (MR) fluids. The originality of the new design is in its capability to offer less consumption of MR fluids than the conventional design of MR damper. The new design does not fill the whole cylinder with MR fluids but only use the accumulator space as the volume compensation control zone with MR fluids. The MR fluids control the compressive movement of the accumulator piston which alter the flow of the hydraulic oil to the accumulator chamber. As a result, the regulated flow of oil to the accumulator chamber will only have a direct effect to the compression stiffness of the damper. The experimental results show that the proposed design is capable to adjust the compression force while maintaining the rebound force of the damper.

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Section: Design Of Accumulator Controlled Mr Dampermentioning

confidence: 99%

New Variable Stiffness Damper with Magnetorheological-Based Accumulator Control

Hong

Imaduddin

Mazlan

et al. 2018

KEM

View full text Add to dashboard Cite

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“…Yun te al. [13] and Nguyen and Choi [14] presented a design optimization of the MR damper for vehicle suspension systems. In their optimization procedure, a local quadratic fitting technique using a golden-section algorithm is constructed by finite element method parametric design language.…”

Section: Introductionmentioning

confidence: 99%

ANSYS finite element design of an energy saving magneto-rheological damper with improved dispersion stability

et al. 2015

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The magnetorheological (MR) damper is one of the utmost progressive applications of asemi-active damper. Uninterrupted controllability in both on and off state is an important factor of its plenitude application. Current research is attempting to make the damper more effective and efficient by minimizing the existing limitations such as MR fluid's sedimentation, power consumption and temperature rising, and design optimization. We have broadly analyzed the optimization of MR dampers design with finite element simulation where various parameters of the MR damper have been considered for more accurate results. A prototype MR fluid has been prepared by coating the carbonyl iron particles with xanthan gum to reduce sedimentation. The SEM and Turbiscan results noticeably verify the improved sedimentation stability. In addition, a power-saving MR damper model has been developed by finite element analysis using ANSYS software. Prolonged operation raises the damper's body temperature and degrades the performance. However, in this energy-saving MR damper model the temperature is not rising to a higher value compared to the conventional dampers, and consequently promotes damper efficiency.

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