Abstract
Modeling mechanical joints in an accurate and computationally efficient manner is of great importance in the analysis of structural systems, which can be composed of a large number of connected components. This work presents an interface model that can be decomposed into a series-series Iwan model together with an elastic chain, subject to interfacial shear loads. A reduced-order formulation of the resulting model is developed that significantly reduces the computational requirements for the simulation of frictional damping. Results are presented as the interface is subject to harmonic loading of varying amplitude. The models presented are able to qualitatively reproduce experimentally observed dissipation scalings. Finally, the interface models are embedded within a larger structural system to illustrate there effectiveness in capturing the structural damping induced by mechanical joints.
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