Synthesis of lever-blade dampers with enhanced mechanical structure

Abstract

Introduction. The torsion suspensions are in wide use at contemporary automotive engineering. Such suspension operating elements are torsions: elastic bars, loaded with torsion force. The torsion bars are traditionally used as suspension structure of armored vehicles and cars. Moreover, torsion bars in automobile suspensions can be used both as the elastic element, and as an auxiliary device, i.e. a stabilizing bar, purposed to create the vehicle’s anti-roll resistance. Given that the torsion bar represents only an elastic element, the question of energy dissipation in suspensions including such bar is quite relevant. Firstly the problem of improving the torsion bar suspensions’ energy dissipation has been solved in the UK, when for the first time in parallel with the torsion bars the hydraulic piston shock absorbers have been installed. Due to this the suspension’s tendency to body longitudinal vibrations has been eliminated with greatly improved smoothness of suspension’s course. Currently, in addition to said hydraulic piston or gas shock absorbers, characterized by the movable member’s translational motion respectively to the housing in wide use at torsion suspension structure are lever shock absorbers (piston and vane types), characterized by the movable member’s rotational movement respectively to the housing. So on each side of the T-72 tank (USSR), the first, second and sixth suspensions are equipped with three lever-blade dampers (lever rotation angle of 87°) [1]. The existing hydraulic shock absorbers are usually implementing a performance, consisting of digression and regression areas, that is due to the throttle and the throttle-valve modes of operation. However, increasing demands to the suspension of the vehicle require the implementation of other performance characteristics not implementable when the existing shock absorbers’ passive constructions using due to their functionality limitations. An alternative in the form of active damping systems’ application with respect to their high cost and additional energy consumed is selective being welljustified only for original unique or cost-expensive equipment [2]. Therefore, the synthesis of passive