Composite staged energy dissipation self-centering damper

By using a composite, staged energy-dissipating self-resetting damper, combined with a high-damping rubber sheet and a slope friction assembly, the problem of insufficient energy dissipation of friction dampers and viscoelastic dampers under different earthquake magnitudes has been solved. This enables effective energy dissipation and resetting under different earthquake magnitudes, improving the applicability and reliability of the damper.

CN224352316UActive Publication Date: 2026-06-12ZHENGZHOU UNIV +2
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHENGZHOU UNIV
Filing Date
2025-07-04
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

Existing friction dampers are not ideal in terms of energy dissipation under high-frequency vibration. Friction force is closely related to preload. If the preload is too large, it cannot overcome static friction under small vibrations and thus cannot dissipate energy. If the preload is too small, the energy dissipation capacity is insufficient under large vibrations. Viscoelastic dampers are prone to losing their working capacity due to excessive deformation of the rubber energy dissipation components under large deformation, which reduces the overall performance.

Method used

A composite, staged energy-dissipating self-resetting damper is adopted, consisting of an outer cylinder, a middle cylinder, and an inner cylinder. It combines a high-damping rubber sheet and a slope friction assembly. Through the organic combination of rubber energy dissipation and friction energy dissipation, and by utilizing SMA rods to achieve the self-resetting function, it can effectively dissipate energy and reset under different earthquake magnitudes.

Benefits of technology

Under minor earthquakes, the high-damping rubber sheet effectively absorbs energy. Under moderate to major earthquakes, the rubber sheet works in conjunction with the slope friction components to enhance energy dissipation capacity, avoiding the shortcomings of traditional friction dampers and viscoelastic dampers, improving the applicability and reliability of the damper, and ensuring the safety and stability of the structure.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224352316U_ABST
    Figure CN224352316U_ABST
Patent Text Reader

Abstract

The utility model relates to damper technical field especially, it relates to composite stage -by -stage energy dissipation self-resetting damper, including outer layer cylinder and inner layer cylinder, the inside of outer layer cylinder is installed middle layer cylinder, the inside of outer layer cylinder is located middle layer cylinder's inside and is installed inner layer cylinder, the utility model realizes through adopting composite energy dissipation mode, makes full use of rubber energy dissipation and friction energy dissipation's characteristics, realizes rubber energy dissipation and friction energy dissipation's organic combination, promotes damper's performance and applicability, under the small earthquake condition, high damping rubber sheet can effectively absorb and dissipate energy, and keep the flexibility and stability of structure simultaneously, under the medium and big earthquake condition, rubber and slope friction assembly work in coordination, rubber provides initial energy dissipation, and friction assembly further enhances energy dissipation capacity, avoids the energy dissipation failure of traditional friction damper due to the unreasonable pressure setting, also solves the limitation that rubber damper is invalid under the big displacement due to the excessive deformation, improves the overall use effect.
Need to check novelty before this filing date? Find Prior Art