Spring with damping and variable stiffness characteristics, spring assembly and vibration reduction and isolation device

By developing coil springs and butterfly springs with damping and variable stiffness characteristics, the problems of limited damping performance, high cost and immutable stiffness in the prior art are solved, and efficient vibration isolation and energy dissipation effects in mechanical vibration control and structural vibration suppression are achieved.

CN119712748APending Publication Date: 2025-03-28SHANGHAI RES INST OF MATERIALS CO LTD
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Patent Information

Application Number
CN202411495701.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-25
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The prior art has problems such as limited damping performance, high cost, complex maintenance and immutable stiffness in mechanical vibration control and structural vibration suppression, which is difficult to meet the wide-frequency vibration vibration isolation requirements in actual engineering applications.

Method used

The development of coil springs and butterfly springs with damping and variable stiffness characteristics is designed to design spring components and vibration isolation devices that can exhibit high loss factors and deformation-dependent stiffness at room temperature by optimizing the mechanical properties and damping properties of the material.

Benefits of technology

It achieves high damping performance and variable stiffness in the structure, effectively isolate and dissipate energy vibration, reduces the installation space, cost and maintenance complexity of the device, and is suitable for construction, bridges and mechanical support fields.

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Abstract

The invention relates to a spring with damping and variable stiffness characteristics, a spring assembly and a vibration reduction and isolation device. The spring is a spiral spring or a belleville spring. The yield strength of the spring material is larger than or equal to 250 MPa, and the material loss factor is larger than 2.0% under the conditions of the room temperature and the 4 * 10 <-4 > strain amplitude. The maximum static loss factor of the spiral spring and the vibration reduction and isolation device thereof is not less than 6.0%; the maximum static loss factor of the belleville spring and the vibration reduction and isolation device thereof is not less than 3.0%. The vibration reduction and isolation device manufactured by taking the spiral spring or the belleville spring as a core component has the characteristic of variable stiffness. The spring and the vibration reduction and isolation device are applied to the fields of buildings, bridges, mechanical supports and the like, and the effects of energy dissipation, vibration reduction and vibration isolation are achieved.
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