Investigation of under-platform damper kinematics and its interaction with contact parameters (nominal friction coefficient)

TL;DRAbstract

The novel approach proposed by the authors consists in directly measuring the forces transmitted between the two platforms through the damper, versus the relative motion of the platforms. In a previous paper we presented the design and calibration of a test rig where such measurements can be accomplished. In that paper some demonstration results were presented in order to show the capacity of the test rig. In this paper we add 1) a full reconstruction of translational and rotational damper motion, 2) comparisons with the results from a numerical model. The combination of the two allows to understand the contact conditions even in quite complex situations, and to explore the reasons for remarkable changes of the measured hysteresis cycles in operation. The damper used here is a „three point‟‟ damper. It has a statically determinate configuration, moreover its single line contact acts on the „fixed‟ platform, which is supported by the force sensors. This allows to fully determi

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