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Ni-Ti-based shape memory alloy for manufacturing vibration damper of engineering structures

A memory alloy and vibration damping device technology, applied in building components, shockproof, etc., can solve the problems of irrecoverable, unpublished patents, deterioration of structural fatigue strength and vibration environment, etc.

Inactive Publication Date: 2011-02-02
ZHENJIANG YINUOWEI SHAPE MEMORY ALLOYS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Some large-scale space structures and high-rise structures in engineering are flexible structures with a small damping ratio. Once affected by wind or other excitations, severe vibrations often occur, which seriously deteriorates the fatigue strength and vibration environment of the structure and affects the structure. In these cases, the vibration of the structure needs to be controlled
Some existing vibration damping devices in engineering show some limitations in application: such as aging and durability issues, long-term work reliability, renewal and replacement issues after strong vibrations, and failure to recover after strong vibrations, etc.
After inquiry, no relevant patents have been published

Method used

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  • Ni-Ti-based shape memory alloy for manufacturing vibration damper of engineering structures
  • Ni-Ti-based shape memory alloy for manufacturing vibration damper of engineering structures
  • Ni-Ti-based shape memory alloy for manufacturing vibration damper of engineering structures

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Experimental program
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Effect test

Embodiment 1

[0009] According to the method of the invention, the NiTi-based shape memory alloy is subjected to solid solution treatment, and its composition range is: Ni: 55.1wt%; Ti: 41.5wt%; Cr: 0.4wt%; compound rare earth RE: 0.1wt%. After 700°C solid solution heat preservation treatment for 60 minutes, and then aging treatment, the alloy will show complete nonlinear superelasticity and achieve the best superelastic performance.

[0010] The NiTi-based shape memory alloy prepared above was installed in such as figure 2 The engineering frame structure shown. When the frame vibrates, the mechanism deforms under force, and the NiTi-based shape memory alloy damping device also deforms at the same time. When the NiTi-based shape memory alloy damping device is in the nonlinear superelastic state, due to the pseudoelastic effect of the shape memory alloy, the deformation of the alloy plate will recover when the frame vibration returns to the equilibrium position in a large deformation range...

Embodiment 2

[0012] According to the method of the invention, solid solution treatment is carried out on the NiTi-based shape memory alloy, and its composition range is: Ni: 57.5wt%; Ti: 43.7wt%; Cr: 0.9wt%; compound rare earth RE: 2wt%. After 700°C solid solution heat preservation treatment for 60 minutes, and then aging treatment, the alloy will show complete nonlinear superelasticity and achieve the best superelastic performance.

[0013] The NiTi-based shape memory alloy prepared above was installed in such as figure 2 On the engineering frame structure shown, the shock absorption effect is very good.

[0014] image 3 The attenuation effect comparison of installing ordinary vibration damping device and NiTi-based memory alloy vibration damping device respectively is given. image 3 (a) shows the vibration reduction situation of ordinary vibration reduction devices, and the vibration reduction effect is obviously not good. image 3 (b) shows the vibration reduction of the NiTi-base...

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PUM

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Abstract

The invention relates to an Ni-Ti-based shape memory alloy for manufacturing a vibration damper of engineering structures, which is characterized in that solution treatment is carried out on the Ni-Ti-based shape memory alloy, and the Ni-Ti-based shape memory alloy comprises the following components: 55.1-57.5 wt% of Ni, 41.5-43.7 wt% of Ti, 0.4-0.9 wt% of Cr and 0.1-2 wt% of composite rare earth(RE). After the solution treatment is carried out at 700 DEG C for 60 min and aging treatment is carried out, the Ni-Ti-based shape memory alloy has completely nonlinear superelasticity so as to achieve the optimal superelasticity performance. The obtained Ni-Ti-based shape memory alloy material can be used for manufacturing a shape memory alloy vibration damper with simple structure.

Description

technical field [0001] The invention relates to the technical field of copper-zinc-aluminum shape-memory alloys, in particular to a nickel-titanium-based shape-memory alloy used for manufacturing vibration damping devices for engineering structures. Background technique [0002] Some large-scale space structures and high-rise structures in engineering are flexible structures with a small damping ratio. Once affected by wind or other excitations, severe vibrations often occur, which seriously deteriorates the fatigue strength and vibration environment of the structure and affects the structure. In these cases, the vibration of the structure needs to be controlled. Some existing vibration damping devices in engineering show some limitations in application: such as aging and durability issues, long-term work reliability, renewal and replacement issues after strong vibrations, and failure to recover after strong vibrations, etc. . Due to the high recoverable strain of the shap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/10C22C19/05E04B1/98
Inventor 司松海司乃潮
Owner ZHENJIANG YINUOWEI SHAPE MEMORY ALLOYS
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