Asymmetrically inertia-regulated local resonance device and resonance system

By utilizing an asymmetric inertial modulation local resonant device and employing the design of asymmetric rod systems and mass blocks, the shortcomings of traditional devices in suppressing vibrations at wide low and wide frequencies are overcome. This achieves broadband vibration suppression and the generation of an extremely wide bandgap, making it suitable for complex engineering environments.

CN122216294APending Publication Date: 2026-06-16BEIJING INST OF TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING INST OF TECH
Filing Date
2026-05-14
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

Existing inertial control local resonant devices present a contradiction in suppressing both low-frequency and wide-frequency vibrations, making it difficult to effectively suppress low-frequency and wide-frequency vibrations. Furthermore, their bandwidth control is limited, failing to meet complex and stringent engineering requirements.

Method used

An asymmetric inertial control local resonant device is adopted. By adjusting the inertial force through the asymmetric rod system design and the distribution of mass blocks, a wide low-frequency vibration suppression effect is achieved, and an extremely wide bandgap is generated to suppress broadband vibration. The control is achieved by utilizing the geometric parameters and mass distribution parameters of the asymmetric rod system.

Benefits of technology

It achieves broadband vibration suppression or generates an extremely wide bandgap at low frequencies, breaking through the limitations of traditional symmetric models. It can effectively suppress vibration response under different working conditions, has a simple structure, high reliability, and is suitable for complex environments.

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Abstract

This application relates to the field of vibration reduction technology, and particularly to an asymmetric inertial control local resonant device and resonant system. The external rod system includes an outer frame formed by four outer frame flexible rods creating a parallelogram, with its upper and lower ends fixedly connected to an upper end plate and a lower end plate, respectively. The internal rod system includes an inner frame formed by four inner frame flexible rods creating a parallelogram, located inside the outer frame. The outer sides of the four endpoints of the inner frame are opposite to the inner sides of the four endpoints of the outer frame, forming four sets of nodes. The two ends of three flexible connecting rods are connected to any three corresponding sets of nodes of the inner and outer frames. A mass block is placed on the outer side of the free end of the inner frame. The surfaces of the outer frame flexible rods, flexible connecting rods, and inner frame flexible rods are covered with rigid plates. The upper end plate and the lower end plate are connected by a first spring. This application features a simple structure and high reliability, and can achieve a wide low-frequency vibration suppression effect that surpasses traditional symmetrical models.
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