Shape memory alloy spring vibration absorber containing collision damping energy-dissipating device

Abstract

The invention discloses a shape memory alloy spring vibration absorber containing a collision damping energy-dissipating device. The shape memory alloy spring vibration absorber comprises a vibration absorber main body and a limiting device, wherein the vibration absorber main body comprises a fixed frame, a first spring, a second spring, a mass block and a guide pillar; the two ends of the guide pillar are respectively connected with the top end and bottom end of the fixed frame; the first spring, the mass block and the second spring are successively sleeved on the guide pillar; the limiting device comprises an upper limiting part and a lower limiting part; the upper limiting part is located between the top end of the fixed frame and the mass block; the upper limiting part comprises a first limiting block, a first limiting spring and an upper limiting damper; the lower limiting part is located between the bottom end of the fixed frame and the mass block; the lower limiting part comprises a second limiting block, a second limiting spring and a lower limiting damper. The shape memory alloy spring vibration absorber can meet the vibration control requirements of different main body structures and can greatly increase the vibration absorbing effect of the vibration absorber.

Description

technical field [0001] The invention relates to the technical field of vibration damping devices, in particular to a shape memory alloy spring vibration absorber with a collision damping energy dissipation device. Background technique [0002] A tuned mass damper (TMD for short) is a kind of passive tuned vibration reduction control device, which can be installed as a substructure on the main structure that needs vibration control, by adjusting its vibration frequency to the fundamental frequency of the main structure or exciting Near the frequency, when the main structure is excited to vibrate, the substructure will generate an inertial force opposite to the vibration direction of the main structure, so that the response of the main structure is attenuated and controlled. In the field of machinery, tuned mass dampers, also known as dynamic vibration absorbers, are generally composed of mass blocks, springs and dampers. Because of their simple structure and easy processing, ...

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Problems solved by technology

However, in practical applications, due to the lack of deformation limiting devices, the vibration absorber is easily damaged due to excessive amplitude during the vibration process, which leads to the failure of the vibration control of the main structure, and the vibration control frequency bandwidth of the existing vibration absorber is narrow. There are major limitations when using

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