Multipurpose damper made of shape memory alloy skew-pulled in multidimensional space

Abstract

The invention provides a multipurpose damper made of shape memory alloy skew-pulled in a multidimensional space and relates to a vibration control device in the technical fields of building structure and mechanical engineering. The multipurpose damper comprises an outer connecting plate, inner separating plates, inner fixing plates, outer fixing plates, hyperelastic shape memory alloy wires, and the like, wherein the inner fixing plates are respectively arranged in eight adjacent corners of a small cube; the outer fixing plates are respectively arranged at eight corners of a big cube; correspondingly, the hyperelastic shape memory alloy wires are fixed by a locking nut, an adjusting screw and an adjusting nut between the inner and outer fixing plates; eight inner fixing plates and eight outer fixing plates are in skew symmetry; eight inner separating plates and eight sets of hyperelastic shape memory alloy wires are also in skew symmetry; and the hyperelastic shape memory alloy wires are arranged at eight corners and are skew pulled to a central point. The multipurpose damper has a function of automatically resetting along horizontal, vertical and twisting directions and can be used for effectively protecting the building structure when earthquake and wind vibration occur.

Description

technical field [0001] The invention relates to a vibration control device for a building structure, in particular to a multi-dimensional space cable-stayed shape memory alloy multipurpose damper for building structure vibration control. Background technique [0002] Metallic yielding dampers are various forms of damping energy dissipators made of mild steel or other soft metal materials. Metals have good hysteretic properties after yielding, and the elastic-plastic hysteretic deformation energy dissipation of some metals is used, including mild steel dampers, lead dampers, and shape memory alloys (SMA) dampers. The mechanism of its vibration control on the structure is to dissipate part of the energy of the structural vibration through the yield hysteresis energy dissipation of the metal, so as to achieve the purpose of reducing the structural response. [0003] Generally, when a metal material is subjected to an external force, it first undergoes elastic deformation, and ...

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Problems solved by technology

Currently researched and developed metal dampers include Chinese Patent No. 03111064.9, which discloses an invention patent named "Conical Shape Memory Alloy Damper", and Chinese Patent No. 200610200568.3, which discloses a patent named "Hybrid Shape Memory Alloy Damper". Invention patent; China Patent No. 200710010925.4 discloses an invention patent named "self-resetting superelastic shape memory alloy damper"; "Invention patents; they are all in one direction, or can only control the horizontal direction, and it is not easy to realize the control of earthquake, wind or mechanical vibration of engineering structures.

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