Mixed mode shape memory alloy frictional damper

A technology of friction damper and memory alloy, which is applied to building components, shockproof, etc., can solve the problems of low energy consumption, residual displacement of friction damper, etc., and achieve the effect of enhancing survivability

Inactive Publication Date: 2008-06-11
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a composite shape memory alloy friction damper, the purpose of which is to solve the problems of the existing shape memory alloy damper with low energy dissipation capacity and the residual displacement of

Method used

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  • Mixed mode shape memory alloy frictional damper
  • Mixed mode shape memory alloy frictional damper

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Experimental program
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Embodiment Construction

[0026] The implementation steps of the present invention will be described in detail below in conjunction with the technical scheme and accompanying drawings.

[0027] (1) Under the action of small and large earthquakes, analyze the engineering structure, and determine the size and parameters of the damper according to the performance requirements to be achieved.

[0028] (2) Main board 1, auxiliary board 2, friction plate 3, superelastic shape memory alloy wire 4, reset rod 5, high-strength bolt 6, U-shaped pre-strain adjustment plate 7, adjustment screw 8, clamp 9 required for processing or purchasing and gasket 10.

[0029] (3) Adhere the secondary plate 2 and the friction plate 3 with industrial glue, and then assemble them with the main plate 1 through high-strength bolts 6 . When assembling, it is required that the active holes 12 of the tie rods on the main board 1, the sub-board 2 and the friction plate 3 are completely aligned. A washer 10 is added under the nut of ...

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Abstract

The invention relates to a compound type memory alloy friction damper, which is mainly composed of a main board, a sub board, a friction plate, a hyperelastic shaped memory alloy wire, a resetting pulling rod, a U-shaped pre-strained adjusting plate and a high strength bolt. The invention is characterized in that the friction plate is inserted between the main board and the sub board, a bolt movable hole and a pulling rod movable hole are reserved on the main board, and a bolt hole and the pulling rod movable hole are reserved on the sub board and the friction plate; the high strength bolt penetrates through the bolt hole on the sub board and the friction plate and the bolt movable hole on the main board; the resetting pulling rod penetrates through the pulling rod movable hole on the main board, the sub board and the friction plate; the hyperelastic shaped memory alloy wire penetrates through the resetting pulling rod and the U shaped pre-strained adjusting plate, and the both ends are respectively pulled tightly and fixed with a clamping device, the interval between the U shaped pre-strained adjusting plate and the resetting pulling rod is adjusted through an adjusting bolt, to ensure the hyperelastic shaped memory alloy wire to reach the required initial strain. The invention has the advantages that the capacity of the energy dissipation is strong, the resetting is automatic, the structure type is simple, and the invention is convenient for the application of the engineering.

Description

technical field [0001] The invention belongs to the anti-vibration technical field of civil engineering structures and relates to a composite shape memory alloy friction damper. Background technique [0002] Earthquakes and strong winds pose a serious threat to the safety and comfort of civil engineering structures. How to effectively reduce the response of engineering structures under dynamic loads such as earthquakes and strong winds, and improve the seismic and wind resistance of structures is one of the problems that need to be solved urgently in the discipline of civil engineering. The traditional method is to rely on improving the stiffness, strength and ductility of the structure itself to resist the effects of earthquakes and wind vibrations. However, under the action of strong earthquakes or strong winds, this passive method will inevitably lead to damage or destruction of some structural members. It is not economical and can not achieve the expected effect, but mo...

Claims

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Application Information

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IPC IPC(8): E04B1/98
Inventor 李宏男钱辉宋钢兵
Owner DALIAN UNIV OF TECH
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