Optimal Design of Hysteretic Dampers Connecting 2-MDOF Adjacent Structures for Random Excitations

摘要

The dynamic behaviour of two adjacent multi-degrees-of-freedom (MDOF) structures connected with a hysteretic damper is studied under base acceleration. The base acceleration is modeled as stationary white-noise random process. The governing equations of motion of the connected system are derived and solved using stochastic linearization technique. This study is concerned on the optimum design of the connecting dampers based on the minimization of the stored energy in the entire system. This procedure is applied on two models. The first is three stories and the second is ten stories. The connecting damper is installed in three cases; in all floors, double dampers in different floors, and single damper. The results show that at these optimum properties of the connecting dampers, the response of each structure is reduced and the energy of the entire system is reduced.