NUMERICAL AND EXPERIMENTAL INVESTIGATIONS OF THE BEHAVIOUR OF A FRAME EQUIPPED WITH NITI WIRES. PART 1. THE CASE OF ABSENCE OF NITI WIRES

Abstract

Numerical and experimental analysis on the vibrations of a 2 level frame structure equipped/or not with shape memory alloy wires is presented in this study. The first part of the study, the present article treats the frame in the absence of NITi wires, while the second part considers the structure equiped with NiTi wires. The structural model consists of 2 level structure with constant height of 350 mm and the width of each plate 300 mm. The plates are made out of plexiglass plates to create a rigid plan system and the columns are circular hollow brass rods of diameter 4.00mmand thickness of 0.40mm. Vibration system tests are performed in order to investigate the behavior of the frame equipped or not with NiTi wires and the effect on the SMA wires on the amplitudes reduction, the transformation behavior for wires and avoiding of the resonance states. The FEM simulations determines the fields of displacement and normal modes. The results are validated with experimental results.