Metallic inserts as a tool to alter the structural damping of joined structures
by Henrik Wentzel, Marten Olsson, Martin Oberg
International Journal of Surface Science and Engineering (IJSURFSE), Vol. 2, No. 1/2, 2008

Abstract: The dynamic response of joined structures, notably the amplification of vibrations, is strongly influenced by the characteristics of the joints. Bolted joints are non-linear both in stiffness and magnitude of energy dissipation, and structures assembled with bolted joints inherit these non-linearities. This largely experimental study shows how thin metallic inserts in the contact region may serve as a tool to alter the non-linear properties of the joint and in this way increase or decrease the level of equivalent viscous damping in the structure. Both quasi-static and dynamic measurements have been performed and a mathematical model trimmed to the static measurements has been shown to produce valid results also for dynamic simulations.

Online publication date: Thu, 26-Jun-2008

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