Self-resetting SMA stranded wire composite magneto-rheological damping support

Abstract

The invention discloses a self-resetting SMA stranded wire composite magneto-rheological damping support, and belongs to the technical field of energy dissipation and shock absorption. The self-resetting SMA stranded wire composite magneto-rheological damping support comprises an energy consumption module and a self-resetting module. A permanent magnet ring, a magnetic conducting ring and an inner pipe fixing baffle sleeve the middle of the inner pipe. An outer pipe inner boss, a left side sealing end plate, a right side sealing end plate and an inner circular pipe jointly form a sealing cavity, and the cavity is filled with magneto-rheological fluid. A boss is arranged in the outer pipe, and a groove is formed in the boss. A steel plate ring sleeves the end part of the inner pipe, SMA stranded wires are evenly arranged around the inner pipe by a circle, and the SMA stranded wires sequentially penetrate through the steel plate ring, the sealing plate and the boss and are fixed to the steel plate ring through an anchorage device. Through relative movement between the inner pipe and the outer pipe, a permanent magnet generates a variable magnetic field, and meanwhile, the damping size of magneto-rheological fluid in the sealing cavity is jointly adjusted through the change of the width of the damping channel; and no matter whether the support is in a pulled state or a pressed state, the SMA stranded wires are pulled, hyperelastic deformation occurs, a reset function is provided, and meanwhile, certain energy dissipation capacity can be achieved.

Description

technical field [0001] The invention belongs to the technical field of energy dissipation and shock absorption, and in particular relates to a self-resetting SMA stranded wire composite magnetorheological damping support. Background technique [0002] Earthquake disasters are characterized by suddenness, low predictability, and high randomness, and are extremely destructive. In particular, when a moderate earthquake or a large earthquake occurs, huge seismic energy will be released, which will cause great damage to the structure. Residual deformation will reduce the ability of the structure to resist aftershocks, and serious damage requires extensive reinforcement and repair, or even reconstruction, resulting in huge waste. [0003] The traditional steel support is prone to lateral buckling under horizontal earthquakes, and it quits work earlier, the energy consumption of the support is insufficient, the force of the structure enters the elastic-plastic range, the shear cap...

AI Technical Summary

Problems solved by technology

Combining this material with existing energy-dissipating shock-absorbing devices can make up for some of the performance deficiencies of traditional devices, but the asymmetry of tensile and compressive properties of shape memory alloy materials also brings challenges to its reasonable application.

Images