Theoretical analysis of vibration protection properties of a single-support suspension under constant and adjustable inelastic resistance in the oscillation cycle

Abstract

The article presents a theoretical analysis of the vibration protection properties of a single-mass single-support suspension with unregulated and adjustable damping in the oscillation cycle. It was found that, in comparison with unregulated damping, its instantaneous regulation in the oscillation cycle provides a low level and approximate constancy of the vertical accelerations ranges of the sprung mass in the resonant oscillation zone, but causes an abrupt change in acceleration at the moments of damping off when the suspension passes its middle position. Replacing the instantaneous damping shutdown with a smooth one in the area of the middle position of the suspension makes it possible to reduce the resonant frequency by more than 2 times compared to the resonant frequency of an unregulated suspension and reduce the range of vertical accelerations of the sprung mass in the resonant zone by up to 25 % compared to the range of accelerations of the sprung mass on a suspension with optimal instantaneous damping control. Keywords: theoretical analysis, vibration protection properties, single-support suspension, adjustable damping, oscillation cycle