A direct integration method for the dynamic analysis of structures equipped with viscoelastic dampers (VED) is presented in this paper. The constitutive model of the damper is set using a system of Maxwell elements composed in parallel (MPS); the evolutive behavior of the VE material is accounted by introducing temperature-dependent mechanical properties. The solution procedure follows an incremental approach of implicit type that, by means of a discrete-time formulation of the problem, allows to express the damping force discretization in a form suitable to be included in a standard integration scheme. The resulting algorithm is proved to be very effective and robust; the distinctive features of the proposed numerical method suggest the possibility of a successful implementation of a MPS procedure in the frame of a standard finite element code.
Implicit Dynamic Analysis of VE-Damped Structures Using Maxwell Parallel Systems
APRILE, Alessandra;
1999
Abstract
A direct integration method for the dynamic analysis of structures equipped with viscoelastic dampers (VED) is presented in this paper. The constitutive model of the damper is set using a system of Maxwell elements composed in parallel (MPS); the evolutive behavior of the VE material is accounted by introducing temperature-dependent mechanical properties. The solution procedure follows an incremental approach of implicit type that, by means of a discrete-time formulation of the problem, allows to express the damping force discretization in a form suitable to be included in a standard integration scheme. The resulting algorithm is proved to be very effective and robust; the distinctive features of the proposed numerical method suggest the possibility of a successful implementation of a MPS procedure in the frame of a standard finite element code.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
