Damper of multi-dimensional superelastic shape memory alloy

Abstract

A multi-dimensional hyperelastic shape memory alloy damper is a damping control device which is used in the technologies of civil construction and mechanical engineering. It is characterized in that: the damper is mainly composed of shape memory alloy thread, internal and external steel containers. The internal and external steel containers are coaxial and the shape memory alloy threads distribute level symmetry along the circle radial of the steel containers. The shape memory alloy threads penetrate into the external steel container and out of the internal steel container, and their ends are fixed on the internal and external steel containers separately. The threads are pulled to the midpoint of its hyperelastic platform by the prestrain of the adjustable screws and nuts. The plane motion of the internal steel container relative to the external steel container causes the elongation and shortening alternative change of the threads to provide stable damping force and large energy dissipation force. Its effects and advantages are: it has passive energy dissipation effect on any direction in the flat and functions of vibration damping and reduction on vertical and torsion direction. It can realize the multi-dimensional passive control of the structure.

Description

technical field [0001] The invention belongs to the technical field of civil engineering and mechanical engineering, and relates to a vibration damping control device, especially capable of exerting energy consumption and vibration damping in any direction in a plane, and simultaneously having vibration damping in vertical and torsional directions and damping of reset function device. Background technique [0002] Excellent passive control devices can effectively suppress the vibration response of engineering structures and ensure the safety and applicability of structures. Commonly used energy dissipation damping devices, such as viscoelastic dampers, viscous fluid dampers, friction dampers, low yield point metal dampers, etc., have some limitations: aging and durability issues, long-term working stability issues, Maintenance and replacement after strong vibration, etc. As a new type of functional material with both sensing and driving capabilities, shape memory alloy has...

AI Technical Summary

Problems solved by technology

Commonly used energy dissipation damping devices, such as viscoelastic dampers, viscous fluid dampers, friction dampers, low yield point metal dampers, etc., have some limitations: aging and durability issues, long-term working stability issues, Maintenance and replacement after strong vibration, etc.

The currently developed shape memory alloy dampers usually only have energy dissipation and vibration reduction capabilities in a single direction, and it is not easy to realize multi-dimensional passive control in engineering.

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