Preliminary numerical analysis of the Vibro-Impact Isolation systems under seismic excitations

The problem of large displacements in isolated structures can cause undesirable effects, such as damage to isolation systems or increases in superstructure accelerations. In order to limit these undesirable effects, the authors propose a new integrated design methodology of vibro-impact isolation systems that aims to control large displacements while limiting the increase in accelerations due to the impact phenomenon. Therefore, this paper shows numerical results obtained on single-degree-of-freedom systems isolated at the base subjected to seismic excitations and constrained by two deformable and dissipative devices.