Twisting-resistant self-restoring lead core shape memory alloy damper

Abstract

A twisting-resistant self-restoring lead core shape memory alloy damper consists of a shape memory alloy cylinder, shape memory alloy extruding beads, shape memory alloy flanges and a lead core. The damper is characterized in that the shape memory alloy extruding beads are symmetrically distributed along the peripheral radial direction of the shape memory alloy cylinder which is fully filled with lead; the damper is fixed at a part in need of twist control through the flanges; when the upper and lower flanges have relative twisting motion, the shape memory alloy cylinder and the lead core consume energy, and the extruding beads extrude the lead core to consume energy, so that the three parts provide strong twisting-resistant energy consumption capability; and when the vibration is over, the damper automatically restores to the primary position. The damper has advantages of strong twisting-resistant energy consumption capability, low maintenance cost, repeated use, self restoration, simple structure, easy installation and the like, simultaneously has vertical vibration energy consumption capability, and can achieve multi-dimensional passive control of the structure.

Description

technical field [0001] The invention belongs to the technical fields of civil engineering and mechanical engineering, and relates to an anti-torsion self-resetting lead core shape memory alloy damper. Background technique [0002] The traditional anti-seismic design is to resist the earthquake by enhancing the stiffness of the building itself, that is, relying on the structure itself to store and consume seismic energy to meet the anti-seismic fortification standard of the structure. Under the action of the earthquake, it is likely not to meet the safety requirements, and the energy dissipation and shock absorption technology provides a reasonable and effective way for the structure to resist earthquakes. The vibration reduction technology of passive energy dissipation dampers is relatively mature. However, as a passive control device, durability and corrosion resistance are common problems in current energy dissipation devices. For example, the viscoelastic damper is easy ...

AI Technical Summary

Problems solved by technology

[0006] The invention provides an anti-torsion self-resetting lead core shape memory alloy damper, which aims to solve the problems of existing passive dampers such as residual deformation, poor durability, only one-way vibration damping ability, and limited energy dissipation capacity.

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