Lightweight design method of isotropic vibration absorber based on elastic shell

By constructing an isotropic vibration absorber design with an elastic shell, and combining topology optimization and the Kriging proxy model, the problems of lightweighting and cost control in multi-directional vibration suppression of dynamic vibration absorbers are solved, achieving effective suppression of multi-directional vibration and material saving.

CN122433243APending Publication Date: 2026-07-21NAT UNIV OF DEFENSE TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NAT UNIV OF DEFENSE TECH
Filing Date
2026-04-24
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing dynamic vibration absorber designs are mostly limited to unidirectional harmonic excitation suppression, which is highly sensitive to direction and ignores lightweight engineering and cost control, making it difficult to meet the practical requirements of multidirectional coupled vibration suppression.

Method used

An isotropic vibration absorber design method based on an elastic shell is adopted. By constructing an isotropic natural frequency calculation model with spring-shell stiffness coupling, and combining topology optimization and Kriging surrogate model parameter optimization, the shell mass and material consumption are reduced.

Benefits of technology

It effectively suppresses multi-directional coupled vibrations, significantly reduces material consumption and manufacturing costs, and improves engineering practicality and vibration reduction efficiency.

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Abstract

The application discloses a kind of isotropic vibration absorber lightweight design methods based on elastic shell, comprising: the cube shell is regarded as elastic element, constructs spring-shell stiffness coupling isotropic natural frequency calculation model;With the maximum shear stiffness as target to the square panel topological optimization, the topological optimization panel of X configuration is obtained;The spacing between the starting point of X shape inside topological optimization panel and the center line of plate a And plate thickness b As design parameter, and with the volume of cube shell as target to minimize optimization design parameter;The shear stiffness and axial stiffness of topological optimization panel after parameter design are substituted into isotropic natural frequency calculation model, the parameter of spring is deduced, and the design of isotropic vibration absorber is completed.The application is applied to the field of vibration absorber design, has remarkable advantage in material saving, manufacturing cost control, increases the engineering transformation of dynamic vibration absorber in the field of vibration reduction guarantee.
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