Self resetting shape memory alloy (SMA) viscous damper

Abstract

The invention discloses a self resetting shape memory alloy (SMA) viscous damper relating to an architectural component. The viscous damper comprises a connecting piece, an outer barrel, a baffle, a piston, an inner barrel and a push-and-pull rod. The viscous damper is characterized in that the form of a double-extrusion rod oil cylinder is adopted by the inner barrel of the damper, the inner barrel is full of silicone oil, and the piston and the oil cylinder keep a spacing; both ends of the inner barrel are respectively provided with a baffle, and the baffles can move in the outer barrel; two groups of SMA wires pass through the oil cylinder, and both ends of the SMA wires are fixed on the baffles by using a clamp; the inner barrel and the outer barrel are connected by a bolt, and a front cover, a rear cover and the connecting piece are welded on the outer barrel. The damper not only has high energy consumption but also has the self resetting function and can set up multiple anti-seismic defensive lines for an architectural structure, therefore improving the seismic hazard resistance of the architectural structure.

Description

technical field [0001] The invention relates to a building component, in particular to a self-resetting shape memory alloy viscous damper. It is used for building structures to resist earthquake and wind vibration disasters, reduce disaster losses, and passively control shock absorbing devices for building structures. Background technique [0002] At present, scholars at home and abroad have developed various types of dampers using different materials, some of which have been applied in actual engineering and achieved certain results, but at the same time most of them also have some shortcomings: energy consumption mechanism Single, dissipates energy in only one way; only one line of energy-dissipating shock-absorbing defense; no reset function. At present, dampers made of shape memory alloy (SMA) materials are mostly researched on dampers based on SMA wires. The application of these dampers in actual engineering has certain limitations. Due to the actual The damping force...

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Problems solved by technology

[0002] At present, scholars at home and abroad have developed various types of dampers using different materials, some of which have been applied in actual engineering and achieved certain results, but at the same time most of them also have some shortcomings: energy consumption mechanism Single, dissipates energy in only one way; only one line of energy-dissipating shock absorption; no reset function

At present, dampers made of shape memory alloy (SMA) materials are mostly researched on dampers based on SMA wires. The application of these dampers in actual engineering has certain limitations. Due to the actual The damping force and energy consumption required by the project are very large. In order to meet the above requirements, the SMA wire damper must increase the cross-sectional area or the size of the damper, and the SMA material is expensive, which is obviously uneconomical.

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