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Investigation of damper valve fluid-structure interaction through the application of experimental visualisation techniques

Ferdinando Guzzomi-2012-01-01-UWA Profiles and Research Repository (University of Western Australia)
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TL;DRAbstract

Automotive dampers (or shock absorbers) improve tyre contact with the road and provide ride comfort and/or tyre grip. They do this by resisting transient wheel motion during vehicle manoeuvring through shearing of hydraulic fluid and dissipating energy in the form of heat. The damper performance is almost entirely governed by the damper valve. Damper valves are complex hydraulic systems, where the valve pressure differential and flow relationship are dictated by the coupling of the elastic response of the deformable valve structure and the fluid flowing through the valve. Therefore, the overall objectives of this research are to development and/or apply experimental technique(s) that observe the damper valve fluid flow and deflection and then comment on these observations. This research uses a novel application of non-intrusive experimental techniques to visualise the flow field and deflection of the valve to study their interaction with one another and the surrounding valve structure.

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Automotive dampers (or shock absorbers) improve tyre contact with the road and provide ride comfort and/or tyre grip. They do this by resisting transient wheel motion during vehicle manoeuvring through shearing of hydraulic fluid and dissipating energy in the form of heat. The damper performance is almost entirely governed by the damper valve. Damper valves are complex hydraulic systems, where the valve pressure differential and flow relationship are dictated by the coupling of the elastic response of the deformable valve structure and the fluid flowing through the valve. Therefore, the overall objectives of this research are to development and/or apply experimental technique(s) that observe the damper valve fluid flow and deflection and then comment on these observations. This research uses a novel application of non-intrusive experimental techniques to visualise the flow field and deflection of the valve to study their interaction with one another and the surrounding valve structure.

Keywords

DamperVisualizationFluid–structure interactionComputer scienceMechanical engineeringEngineeringStructural engineeringFinite element method

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