Performance Evaluation of Magneto-Rheological Damper Through Characterization Testing, Modeling and its Implementation in Quarter Car

Abstract

Purpose: Semi-active devices are showing a greater prominence in several engineering applications in recent times. This work makes an attempt to evaluate the performance of semi-active damper when used with a class of smart material called magneto-rheological (MR) fluid. Method: Initially an MR damper is developed and characterized using an in-house prepared MR fluid. The rheological study is also performed for the prepared MR fluid at different input currents. The behavior of the MR damper through characterization testing is modeled using a hysteretic modeling technique known as Kwok model and the parameters are converted into current-dependent variables. The force simulation through Kwok model is used in quarter car simulation model for different dynamic conditions with off-state, constant current and current through Skyhook control. Results: The comparative results with different current conditions are analyzed. An attempt has been made to replicate these conditions in the experiments using quarter car test rig. Conclusion: Both simulation and experimental analyses revealed greater vibration suppression capability of MR damper when used with skyhook control. On an average, 24% peak amplitude reduction is observed when compared to off-state condition. © 2021, Krishtel eMaging Solutions Private Limited.