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A semi-active sma-piezoelectric composite gear friction damper

A friction damper and piezoelectric composite technology, which is applied in the direction of building types, buildings, building components, etc., can solve the problem that friction materials cannot be fully utilized, achieve good self-resetting effect, improve utilization rate, and have a significant effect of frictional energy consumption Effect

Active Publication Date: 2021-07-20
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional translational friction dampers have problems such as insufficient utilization of friction materials under large displacements

Method used

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  • A semi-active sma-piezoelectric composite gear friction damper
  • A semi-active sma-piezoelectric composite gear friction damper
  • A semi-active sma-piezoelectric composite gear friction damper

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Embodiment Construction

[0009] The present invention is a semi-active SMA-piezoelectric composite gear friction damper, including a T-shaped connector 1, an annular friction plate 10 and a gear 3 with a connecting hole installed on both sides of the T-shaped connector 1 through a screw 7, An annular piezoelectric ceramic driver 5 installed on the outside of the gear 3, a nut 6 that fixes each component and applies a pre-tightening force; the gear 3 is placed at the center of the lower connecting plate 2 with a rack, and meshed with the rack The screw 7 fixes the annular friction plate 10, the gear 3 with the connecting hole and the annular piezoelectric ceramic driver 5 on both sides of the T-shaped connector 1 in sequence, and reserves holes on the same side of the T-shaped connector 1 Arrange two groups symmetrically.

[0010] In the semi-active SMA-piezoelectric composite gear friction damper described above, the connecting hole of the gear 3 on the same side of the T-shaped connector 1 is placed ...

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Abstract

A semi-active SMA-piezoelectric composite gear friction damper, including a T-shaped connector (1), an annular friction plate (10) and a gear with a connecting hole (3) mounted on the T-shaped connector (1) through a screw ) on both sides, the annular piezoelectric ceramic driver (5) installed on the outside of the gear (3), the nut (6) that fixes each component and applies pre-tightening force; the gear (3) is placed on the lower connection with the rack at the center of the plate (2) and engages with the rack; the screw (7) fixes the ring-shaped friction plate (10), the gear with connecting holes (3) and the ring-shaped piezoelectric ceramic driver (5) to the T Two sides of the T-shaped connector (1), and two groups are symmetrically arranged at the reserved holes on the same side of the T-shaped connector (1).

Description

technical field [0001] The invention belongs to the field of damping control of engineering structures, and in particular relates to the technology of a semi-active SMA-piezoelectric composite gear friction damper. Background technique [0002] With the development of urban construction, the control method of adding energy-consuming shock-absorbing devices to structures has become one of the main measures to reduce the threat of earthquakes and strong winds to structural safety. As an energy-dissipating device, the friction damper has the characteristics of strong energy-dissipating capacity, little influence of the load and its frequency on its performance, simple structure, and low cost, especially in controlling the seismic response of structures near faults and earthquakes of middle and high-rise structures. Response and other aspects have unique advantages. However, the traditional single type of damper is obviously not enough to effectively deal with various external ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/98E04H9/02
CPCE04B1/98E04H9/021
Inventor 杜永峰韩博李芳玉李虎张超
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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