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In the last years, the increase of the slenderness and flexibility of civil construction structures has resulted in technological advances in studies of systems submitted to the action of dynamic loads of diverse natures. These structures, when excited, can cause discomfort to users and even result in their collapse. In this context, it is necessary to the control these vibrations in order to avoid damages and future structural failures. In the present work, a passive vibration control device is applied through the incorporation of coil springs of a Shape Memory Alloy (SMA) in its superelastic state. In a first phase, we will carry out studies of analytical and numerical modeling of the system without the passive elements and then we will execute experimental dynamic tests for the purpose of validation of the control mechanism in a building of two degrees of freedom (2DOF). In the assembly, wires of steel coupled with the damping elements were incorporated to the dampers aiming to increase the structural damping and reduce the transmissibility of displacement. The results indicate that the application of this passive control device decreases the acceleration signal attenuation time in 14 seconds, adds up to 192% structural damping and reduces the displacement transmissibility by up to 56.6%, which validates the control technique employed.

Análise dinâmica aplicada ao controle de vibrações em protótipo de edifício incorporando molas LMF superelásticas