Method for calculating harmonic response of magnetoelectric elastic structure by strengthening overlapped triangle unit

By strengthening the overlapping triangle element method, the problems of low calculation accuracy and poor stability in the magneto-electromagnetic elastic structure in the prior art are solved, and efficient, stable and precise harmonic response analysis of the magneto-electromagnetic elastic structure in complex geometric shapes is achieved.

CN119720654AActive Publication Date: 2025-03-28HUAZHONG UNIV OF SCI & TECH
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Patent Information

Application Number
CN202411790775.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-06
Publication Date
2025-03-28
Estimated Expiration
2044-12-06

AI Technical Summary

Technical Problem

When dealing with the problem of strong gradient changes and discontinuity in magneto-electromagnetic bomb structures, the calculation accuracy is low and the stability is lacking, making it difficult to effectively analyze the harmonic response of magneto-electromagnetic bomb structures with complex geometric shapes.

Method used

The enhanced overlapping triangle element method is adopted, by deducing the discrete form dynamic control equation of magneto-electromagnetic element structure, and using standard triangular element mesh for meshing, the node interpolation function and local higher-order numerical approximation based on strengthened overlapping triangle finite elements are constructed, and a numerical discrete model of overlapping triangle finite element for magneto-electromagnetic element structure dynamics problem is established, and boundary conditions and external excitation are applied to analyze the harmonic response.

Benefits of technology

It realizes efficient, stable and precise analysis of the harmonic response of magneto-electric bomb structures, improves calculation efficiency and accuracy, and has strong grid adaptability.

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Abstract

The invention discloses a method for calculating the harmonic response of a magnetoelectric elastic structure by using a reinforced overlapped triangle unit, and relates to the technical field of magnetoelectric elastic intelligent materials. In the process of constructing a local reinforced interpolation primary function, a composite primary function composed of a Lagrange polynomial primary function and a plane wave primary function is used for construction; in the process of constructing the local numerical approximation, a weighting function is constructed by introducing a middle edge node into each enhanced overlapped triangle unit, numerical interpolation is completed on the premise of meeting unit decomposition characteristics, and a magnetoelectric elastic structure dynamic matrix control equation is established based on the numerical interpolation. And obtaining an enhanced overlapping finite element numerical model of the solver dynamic response, and after proper boundary conditions and external excitation are applied, finishing high-precision forecasting of the harmonic response of the magnetoelectric elastic structure.
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