Propeller type shape memory alloy twisting resistant energy consumer

Abstract

The invention relates to a propeller type shape memory alloy twisting resistant energy consumer, which mainly comprises an upper flange, martensite shape memory alloy energy-consuming rings, a rotating shaft, a rotating shaft heave, austenite shape memory alloy twisted lines, a clamping bolt, a steel cylinder, a chute and a lower flange. The energy consumer is characterized in that four elliptic type steel heaves are evenly welded on the rotating shaft, the heave 1 is parallel with the heave 3, the heave 2 is parallel with the heave 4, and the heaves 1 and 3 are mutually vertical to the heaves 2 and 4; each heave is sleeved with a martensite shape memory alloy energy-consuming ring, passes through the steel cylinder along three austenite shape memory alloy twisted lines connected at two ends of a long shaft of each energy-consuming ring respectively, and is stretched to the middle point of a super elastic platform by the clamping bolt; the upper end of the rotating shaft is connected with the upper flange, while the lower end is inserted into the chute of the lower flange which is connected with the lower end of the steel cylinder; and the energy consumer is fixed at a part requiring twisting control by the upper flange and the lower flange. The propeller type shape memory alloy twisting resistant energy consumer has the advantages of strong energy consuming capacity, repeated use, automatic reset and simple structure.

Description

technical field [0001] The invention belongs to the technical fields of civil engineering and mechanical engineering, and relates to a propeller type shape memory alloy anti-torsion energy consumer. Background technique [0002] Under the action of uncertain strong winds and earthquakes, only relying on the performance of the structure itself to store and consume external energy often cannot meet the safety requirements. Structural vibration control technology provides a reasonable and effective way for disaster prevention and mitigation of engineering structures. Compared with active and semi-active control methods, passive energy dissipation and vibration reduction technology is relatively mature. However, as a long-term used control device, durability and corrosion resistance are common problems in current energy consumers, such as viscoelasticity The damper is easy to age, the viscous damper is difficult to maintain, the friction damper has poor reliability in long-term ...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a propeller-type shape memory alloy anti-torsion energy dissipator, which aims to solve the problems of existing passive energy dissipators such as residual deformation, poor durability, only axial vibration damping ability, and limited energy dissipation capacity.

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