Vibration of Hydraulically Interconnected Suspensions due to Fluid-Structure Interaction

University of Canterbury, Christchurch, New Zealand
Publication Type:
Conference Proceeding
Proceedings of the 13th Asia-Pacific Vibration Conference (APVC 09), 2009, pp. 1 - 10
Issue Date:
Full metadata record
The pressure changes produced inside the fluid circuits of Hydraulically Interconnected Suspensions (HIS) often lead to vibration of pipelines and associated structures and become a source of structural noise. This paper presents a theoretical investigation into the vibration of a liquid-filled hydraulic circuit that is often used in an interconnected suspension. The one-dimensional wave theory is employed to formulate the equations that govern the dynamics of the fluid-structural system. Axial and one plane of lateral vibrations as well as the effects of shear deformation on the lateral vibration of the pipe are considered. The Transfer Matrix Method (TMM) is applied to determine the steady state response of the fluid-structural system, which consists of pipe sections, damp valves, an accumulator, and supports. The overall system transfer matrix including fluid and pipe mechanics is obtained by combining with field transfer matrices representing the motion of the single pipe sections and various point transfer matrices derived in this work for describing specified junction conditions. The simulation results show the hydraulic components have apparent impact on the dynamics of combined pipe structural and fluid system.
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