| Popis: |
This paper presents the design of a novel shape memory alloys (SMAs) damper, and its application in the vibration control of transmission towers. Firstly, based on a brief introduction for the essential properties of SMAs, a kind of constitutive model, i.e., the Brinson model is established to describe the unique behaviors of the material, combined with the experiments results. And then, a novel SMA damper, with the functions of displacement amplification and re-centering, is specifically designed by utilizing SMAs’ damping capacity. To verify and evaluate the device’s performance, the FEM model of an actual transmission tower is subsequently built in ANSYS, and by embedding the theoretical model of the damper into its analysis process, the responses of the tower subjected to the natural wind are numerically calculated. The results show that under the reasonable installations, the proposed SMA damper has a good effect on the wind-induced response control of the transmission tower. |
