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Tuesday, July 9 • 15:30 - 15:50

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This study proposes the relationship between the ride comfort of passenger vehicles and two different types of magnetorheological (MR) dampers: with and without bypass holes in the piston. To achieve this, two cylindrical-type MR dampers with identical dimensions such as the radius of piston, pole lengths, and the distance between two poles are proposed. One of the MR dampers adds the bypass holes in the piston bobbin to obtain a relatively low damping force slope in low piston velocity region. In order to enhance the ride quality of passenger vehicle, the damping force slope of rear damper should be more gradual than that of front damper. So, it can be inferred that identical semi-active vehicle systems require normal MR dampers in the front and MR dampers with bypass holes in the rear with proper control strategies. To evaluate the ride performance, a robust sliding mode controller is designed. It is demonstrated through a simulation that the proposed vehicle system produces better ride comfort than vehicle systems equipped with only one type of MR damper.

avatar for Mohammad Rafiee

Mohammad Rafiee

Postdoctoral Fellow, Polytechnique Montréal
Mohammad Rafiee received his Ph.D. degree in Mechanical Engineering from the University of Ottawa in 2018. Currently, he is a Postdoctoral Fellow at Polytechnique Montreal in Canada. His research interests are primarily focused on the development of advanced composite materials, smart... Read More →


Tuesday July 9, 2019 15:30 - 15:50 EDT
Outremont 6
  T08 Mat. for noise & vibr. cntrl., SS02 Vibr damping materials