Bogdan Sapiński
Czasopismo Techniczne, Mechanika Zeszyt 2-M (13) 2014, 2014, s. 53 - 63
https://doi.org/10.4467/2353737XCT.14.290.3378Methods are outlined that can be employed to reduce the dynamic components of interaction forces between the vehicle engine and the car body, taking into account the main sources of vibration in the engine. The transmitted forces arising due to the reciprocating motion of the pistons in a two-cylinder engine are calculated. The amplitude and frequency characteristics are used to develop a method for controlling the engine mount stiffness and damping depending on the angular velocity of the crank shaft motion. The study explores the feasibility of damping control in the mount through the use of magnetorheological (MR) dampers operated in the squeeze mode.
Bogdan Sapiński
Czasopismo Techniczne, Elektrotechnika Zeszyt 2-E 2016, 2016, s. 29 - 40
https://doi.org/10.4467/2353737XCT.16.245.6044In the paper, the authors present the results of a numerical study of a magnetorheological (MR) damper prototype operating in the so-called squeeze mode. The analyzed prototype allows achieving a symmetrical response in both directions of piston motion. The authors show the results of magnetostatic analyses of the electro-magnetic circuit of the device and lumped parameter model using calculations of the control circuit and the damping force output.
Bogdan Sapiński
Czasopismo Techniczne, Mechanika Zeszyt 2-M (13) 2014, 2014, s. 45 - 52
https://doi.org/10.4467/2353737XCT.14.289.3377The paper briefly summarises the design structure of a prototype linear and rotary magnetorheological (MR) damper with energy recovery capability, engineered by the authors, and provides selected characteristics of those devices based on laboratory testing.