Shape memory alloy friction composite vibration isolator

Abstract

The invention discloses a shape memory alloy friction composite vibration isolator which comprises an inner barrel and an outer barrel, wherein the inner barrel is connected with an upper flange, the outer barrel is connected with a lower flange, the inner barrel and the outer barrel are coaxial, and the inner barrel is connected with the outer barrel through multiple layers of austenite shape memory alloy standard wires in the axial direction. A slidable inner barrel base is arranged under the inner barrel, an axial austenite shape memory alloy spring and a plurality of sets of radial austenite shape memory alloy springs are arranged inside the slidable inner barrel base, the radial austenite shape memory alloy springs are connected with the inner barrel through a sliding friction pair, and the lower portion of the slidable inner barrel base is connected with the outer barrel through a self-adapted sliding friction pair. A slope with a small upper portion and a large lower portion is arranged on the front portion of a sliding block, and a chamfer corresponding to the slope is arranged on the outer wall of the lower portion of the inner barrel. According to the shape memory alloy friction composite vibration isolator, the austenite shape memory alloy is characterized in that deformation self-reset capacity is strong and the energy consumption of friction elements is high, the characteristics of the austenite shape memory alloy are made full use, and the purposes of multidirectional and vertical vibration control in the horizontal plane and self-reset are achieved.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, in particular to a shape memory alloy friction composite vibration isolator. Background technique [0002] Seismic resistance of engineering structures is one of the key subjects that must be studied in the field of engineering technology. The painful disasters brought by strong earthquakes are obvious to all. A large number of bridges and other building structures were destroyed under the action of strong earthquakes, resulting in huge economic and social losses. Therefore, in the design of civil structures, scientific and strict seismic design must be carried out on the structures. Structural vibration control technology provides effective design methods and approaches for seismic design. Structural vibration control is to control the vibration level of the main structure of the project through vibration absorption, vibration isolation or external active input energy, so as to avoid...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a new type of shape memory alloy friction composite vibration isolator, the purpose of which is to solve the problem of poor self-resetting and self-adaptive ability, difficult maintenance, insufficient energy consumption capacity, poor fatigue resistance and corrosion resistance of existing vibration isolators , single vibration isolation direction, etc.

Images