A multi-directional self-adaptive frictional impact composite damping system and damping method

By designing a multi-directional adaptive friction-collision composite damping system, the energy is consumed by the friction and collision of the rolling ball in the arc track. This solves the problems of low vibration reduction efficiency and easy derailment of traditional dampers under multi-directional excitation, and achieves efficient and stable vibration control.

CN122147989APending Publication Date: 2026-06-05HUNAN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN UNIV OF SCI & TECH
Filing Date
2026-04-22
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Traditional vibration control methods have low vibration reduction efficiency when faced with multi-directional complex excitations, and rolling dampers are prone to derailment. Their energy consumption efficiency is also limited, making it difficult to meet the multi-directional adaptive requirements of flexible structures such as tall buildings and wind turbine towers.

Method used

A multi-directional adaptive friction-collision composite damping system was designed, which adopts a hemispherical stable base, a hemispherical cavity container, a bearing assembly and an arc track. The rolling ball rolls freely in the track and consumes energy through friction and collision. Combined with limit baffles and vibration-absorbing materials, multi-directional adaptive adjustment and efficient energy consumption are achieved.

Benefits of technology

It achieves adaptive adjustment of the damper under multi-directional excitation, improves vibration reduction efficiency, avoids derailment risk, enhances energy dissipation capacity, and ensures structural stability and safety.

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Abstract

The application belongs to the technical field of mechanical structure vibration control, and particularly relates to a structure multidirectional self-adaptive friction and collision composite damping system and a damping method. The system comprises a hemispherical stable base, a hemispherical cavity container installed on the hemispherical stable base, a bearing assembly connected in the hemispherical cavity container, an arc-shaped track with a limiting baffle rotatingly connected in the hemispherical cavity container through the bearing assembly, and a rolling ball placed in the arc-shaped track and freely rolling along the arc-shaped track. The hemispherical cavity container is arranged, and the bearing assembly is matched, so that the arc-shaped track can realize 360-degree free rotation in the hemispherical cavity with very low friction resistance. When a building or a tower drum encounters sudden change of wind direction or complex seismic wave excitation in multiple directions, the track can rely on the inertial force of the rolling ball to quickly and automatically yaw to the damping direction consistent with the external load. On the other hand, the limiting baffle collides with the rolling ball to dissipate energy, thereby overcoming the poor multidirectional adaptability of the traditional damper.
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