Page 1 of 22
European Journal of Business &
Social Sciences
Available at https://ejbss.org/
ISSN: 2235-767X
Volume 07 Issue 05
May 2019
Available online: https://ejbss.org/ P a g e | 406
Analysis of Magneto Rheological Damper
ABSTRACT
Semi-active control devices have received significant attention in recent years
because they offer the adaptability of active control devices without requiring the
associated large power sources. Magneto rheological (MR) dampers are semi-active
control devices that use MR fluids to produce controllable dampers. They potentially
offer highly reliable operation and can be viewed as fail-safe in that they become
passive dampers should the control hardware malfunction. To develop control
algorithms that take maximum advantage of the unique features of the MR damper,
models must be developed that can adequately characterize the damper’s intrinsic
nonlinear behavior.
Following a review of several idealized mechanical models for controllable
fluid dampers, a new model is proposed that can effectively portray the behavior of a
typical magneto rheological damper. Comparison with experimental results for a
prototype damper indicates that the model is accurate over a wide range of operating
conditions and is adequate for control design and analysis.
The characterize the Magnetorheological (MR) damper for realization of the
suspension control for multi-axle military vehicle. An accurate model of MR damper
based on the laws of physics to be embedded in real time controller for suspension
system increases the computational load and implementation intricacies attracting
higher costs and attendant issues. This paper presents a novel practical based
approach to characterize MR dampers using simple experimental set up which,
additionally, with the help of simulation technique, aids to assess the dynamic range
of MR damper for various parameters of suspension system for vibration control in
respect of multi-axle vehicle vehicles. The paper reports experimental investigation
for characterization of MR damper through quarter car model. Equivalent damping
coefficient is estimated using work diagrams. The governing equations of a quarter
car model are formulated analytically and the damping coefficients obtained by
experimental investigation have been used for simulation study.
Page 2 of 22
European Journal of Business &
Social Sciences
Available at https://ejbss.org/
ISSN: 2235-767X
Volume 07 Issue 05
May 2019
Available online: https://ejbss.org/ P a g e | 407
ACKNOWLEDGEMENT
It is our proud privilege and duty to acknowledge the kind of help and guidance from
several people in preparation of this report. It would not have been possible to prepare this
report in this form without their help, cooperation and guidance.
First and foremost we wish to record our sincere gratitude to our beloved Principal
Dr. U.P. Naik, DVVP, Ahmednagar, for his constant support and encouragement in
preparation of this report.
We express our sincere thanks to Dr. Kishor Kale, HOD, Mechanical Engineering,
DVVP, Ahmednagar for his valuable suggestions and guidance throughout the period of
preparation of this report.
We express sincere gratitude to our guide Prof. Narawade P.A. Mechanical
Engineering, DVVP, Ahmednagar for guiding us in investigation for this project. We hold
him in esteem for guidance, encouragement, inspiration received during this project work.
Author- Jathar Sachin Popat
Second Year PG Student D.V.V.P.C.O.E.
Ahmednagar
ABSTRACT
Semi-active control devices have received significant attention in recent years
because they offer the adaptability of active control devices without requiring the
associated large power sources. Magneto rheological (MR) dampers are semi-active
control devices that use MR fluids to produce controllable dampers. They potentially
offer highly reliable operation and can be viewed as fail-safe in that they become
passive dampers should the control hardware malfunction. To develop control
Page 3 of 22
European Journal of Business &
Social Sciences
Available at https://ejbss.org/
ISSN: 2235-767X
Volume 07 Issue 05
May 2019
Available online: https://ejbss.org/ P a g e | 408
algorithms that take maximum advantage of the unique features of the MR damper,
models must be developed that can adequately characterize the damper’s intrinsic
nonlinear behavior.
Following a review of several idealized mechanical models for controllable
fluid dampers, a new model is proposed that can effectively portray the behavior of a
typical magneto rheological damper. Comparison with experimental results for a
prototype damper indicates that the model is accurate over a wide range of operating
conditions and is adequate for control design and analysis.
The characterize the Magnetorheological (MR) damper for realization of the
suspension control for multi-axle military vehicle. An accurate model of MR damper
based on the laws of physics to be embedded in real time controller for suspension
system increases the computational load and implementation intricacies attracting
higher costs and attendant issues. This paper presents a novel practical based
approach to characterize MR dampers using simple experimental set up which,
additionally, with the help of simulation technique, aids to assess the dynamic range
of MR damper for various parameters of suspension system for vibration control in
respect of multi-axle vehicle vehicles. The paper reports experimental investigation
for characterization of MR damper through quarter car model. Equivalent damping
coefficient is estimated using work diagrams. The governing equations of a quarter
car model are formulated analytically and the damping coefficients obtained by
experimental investigation have been used for simulation study.
INTRODUCTION
Passive and active control systems represent the two ends of the spectrum in
the use of supplemental damping strategies for response reduction in civil engineering
structures subjected to strong earthquakes and severe winds. On the other hand, semi- active control systems combine the best features of approaches, offering the reliability
of passive devices, yet maintaining the versatility and adaptability of fully active
systems. According to presently accepted definitions, a semi-active control device is
one that has properties that can be adjusted in real time but cannot input energy into
the system being controlled. Such devices typically have very low power
