Analysis of the operation of the pressure pneumatic valve of the pneumohydraulic shock absorber

This article analyzes the dynamics of a damped object depending on the characteristic dimensions of the pressure valve of a pneumohydraulic shock absorber with reduced shock and vibration conductivity. The reaction of the shock absorber in question is created both by compressing the gas in the pnemotic cavities and by the pressure drop of the liquid when it flows between the hydraulic cavities. The main function of the pressure pneumatic valve is the final damping of vibrations under various influences. An assessment is given of the operability of the filling scheme of the pneumatic cavities of the pressure pneumatic valve as part of a pneumohydraulic shock absorber of reduced shock and vibration conductivity, proposed at the Baltic State Technical University «VOENMEH» D. F. Ustinov. The article describes a mathematical model of a pneumohydraulic shock absorber with a pressure valve. The results of calculations of the motion of a damped object mounted on a pneumohydraulic shock absorber with specified kinematic effects on the base are presented. The relations for the characteristic dimensions of the pneumatic hydraulic shock absorber and the pressure valve are obtained, ensuring rapid attenuation of vibrations and the return of the damped object to the initial equilibrium position. The calculation results presented in this article will also allow us to verify the applicability of simpler mathematical models of a pneumohydraulic shock absorber, which do not take into account factors such as inertia of the valves and compressibility of the liquid.