Nonlinear damper interconnecting adjoining similar structures subjected to random excitation

摘要

As one damper controls the response of two adjoining interconnected structures, the interconnecting adjoining structuresconcept turns into an economic alternative. The functioning of adjoining similar two-degree-of-freedom structures interconnectedby a nonlinear damper under random excitation is investigated. The governing equation of motion of the interconnectedstructure is derived, and responses (displacement and acceleration) are investigated. The response-enhancing efficiency ofthe nonlinear damper is assessed by analyzing the linked structures using Monte Carlo simulation. The optimal value of thedamper constant and representing response in closed-form formulation under stationary white noise excitation is deduced.The initial design of damper interconnecting adjoining similar structures can be ascertained using deduced closed-formformula. The response-enhancing efficiency of the nonlinear damper interlinking two similar adjoining multi-degree-offreedomstructures subjected to real earthquake excitation is also investigated.