Self-resetting super-elastic shape memory alloy damper

Abstract

Automatic-resetting super elasticity shape memory alloy damper is a damping control device used in the areas of civil construction and mechanical engineering technique .It is characteristiced by its framework that consisted of a working piston , a fixing piston , a cylinder ,a cover and a joint rod .The machine uses its alloy wire to restrict the left and right pistons to the partition-wall of the cylinderand the spacing nut. when the pull bar works, piston in one side works follow it ,the piston in the other side is resisted by the partition-wall of the cylinder and keep the resetting alloy wire on running and produce a great anamorphosis restoration ability.The pre-strain resetting super elasticity shape memory alloy wires are divided into tow groups, one of which is used to connect the right fixing piston to the left coverand, the other is used to bind the left fixing piston to the right cover.the two groups doing a interchange push and pull in the pull bars in order to create a bigger energy consumption. The invention simultaneously has the functions of good energy consumption and resetting.It can reduce the vibration of fabrics, components or the remained deformation and has simple structure.

Description

technical field [0001] The invention belongs to the technical field of civil engineering and mechanical engineering, and relates to a vibration reduction control device, in particular to a damper with vibration energy consumption and reset functions. Background technique [0002] Shape memory alloy is a new type of functional material with both sensing and driving capabilities, and has special shape memory effect and superelastic effect. Compared with dampers made of other materials, dampers made of shape memory alloys have the advantages of large recoverable deformation, strong damping capacity, durability, corrosion resistance, fatigue resistance, and low maintenance costs. [0003] In civil structures, the evaluation of the excellent performance of the damper is mainly reflected in two aspects: one is the reduction of vibration of the structure or component under the action of earthquake or wind load; the other is the reduction of the residual deformation of the structure...

AI Technical Summary

Problems solved by technology

At present, there are some dampers developed by using the superelasticity of shape memory alloys, which are mainly divided into two categories according to their functions: one is the energy-dissipating damper, which provides a full hysteresis curve and can consume a lot of vibration energy. The residual deformation after loading is large; the other is the reset type damper, whose hysteretic curve is narrow and long, and the energy dissipation capacity is weak, but it can return to the initial state after unloading

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