Comparing different ways of modelling the damping device of a hydraulic cylinder

Authors: Ermakov S.V., Grachev K.V., Siukhin M.V.
Published in issue: #5(70)/2022
DOI: 10.18698/2541-8009-2022-5-795
Category: Power, Metallurgic and Chemical Engineering | Chapter: Hydraulic Machines and Hydropneumatic units
Keywords: damping device, hydraulic cylinder, dynamic model, non-stationary calculation, fluid throttling, spool valve, friction coefficient, fluid model
Published: 24.06.2022

Two different ways of modelling the operation of a hydraulic cylinder damping device were compared. The mathematical model was built and the geometry of the flow part of the device was obtained. Modelling of hydraulic cylinder operation with damping device in MATLAB Simulink was carried out, as well as modelling of hydraulic cylinder operation using numerical solution of Navier-Stokes equation for description of working liquid motion in the damping device of hydraulic cylinder in STAR-CCM+ software package. The comparison of calculations for hydraulic cylinder rod motion speed was performed using the models described above. The expediency of taking into account fluid hydrodynamics when calculating the damping device of hydraulic cylinder was established.

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