Ricerc@Sapienza

This paper illustrates the dynamics of a novel structural configuration represented by a two adjacent single-degree-of-freedom (2-ASDOF) systems coupled by a connection with spring-dashpot-inerter elements arranged in parallel. The connection is conservative if the link is realized only with spring and/or inerter, whereas becomes nonconservative when also the dashpot is added. The first part of the study concerns the system modal analysis: different linking schemes are considered in order to investigate the influence of each connection parameter on the coupled system modal properties.

The paper deals with the analytical formulation of two adjacent single degree of freedom systems coupled by spring-dashpot-inerter elements adequately tuned in order to build a defective system. From modal analysis analytical expressions of eigenvalues, damping factor and connection parameters in order to build defective systems are given. It is demonstrated that is always possible to realize a defective system when a connection with spring-dashpot-inerter elements is utilized, irrespectively of the assumed structural parameters.