Comparison of Various Designs of Solid Body Compensators for the Filtering of Fluid Flow Pulsations in Hydraulic Systems

Numerous hydraulic sources create significant flow- and pressure pulsations. Common measures to reduce these unpleasant effects include accumulators, in particular featuring a 'Pulse-Tone' design, shock absorbers in various arrangements and novel multiple-volume resonators. In this paper I will compare conventional devices to 3 novel concepts of solid-body compensators, i.e. compensators based on a multi-degree of freedom mass-spring system, compact l/4 side branch resonators and compensators based on various arrangements of plate/shell elements. For this comparison, I will use criteria, such as the adjustment of the resonance frequency, mechanical stresses in the resonator, the ability to compensate frequencies which are integer multiples of a base frequency as well as compact and cheap design.