Method for calculating dynamic response of magnetoelectric projectile structure based on overlapped triangle units

By constructing a dynamic control equation and a numerical discrete model of magneto-electromagnetic bomb structure based on overlapping triangle units, the problem of low computational accuracy and efficiency in the prior art is solved, and high-precision prediction of the dynamic response of complex magneto-electromagnetic bomb structures is achieved.

CN119720536AActive Publication Date: 2025-03-28HUAZHONG UNIV OF SCI & TECH
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Patent Information

Application Number
CN202411790773.4
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

The prior art studies the dynamic performance of magneto-electromagnetic bomb structures with low computational accuracy and efficiency, especially when dealing with complex geometric shapes and multi-physical coupling problems, conventional numerical methods are difficult to effectively solve.

Method used

Using the method based on overlapping triangle elements, the dynamic control equation of magneto-electromagnetic bomb structure is derived, geometric modeling and grid division are performed, the appropriate local reinforcement interpolation basis function is selected, the finite element numerical discrete model of overlapping triangles is constructed, and the matrix equation of the system is established through the Galerkin weighted residual value method to solve it to achieve high-precision dynamic response forecast.

Benefits of technology

Without adding unit nodes, high-order numerical interpolation is achieved, computing efficiency and accuracy are improved, and dynamic problems of complex magneto-electromagnetic bomb structures can be effectively dealt with, especially when using rough grids, high-precision results can still be obtained.

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Abstract

The invention discloses a method for calculating the dynamic response of a magnetoelectric elastic structure based on overlapped triangle units, and relates to the technical field of dynamic response forecast, each constructed overlapped triangle unit and a node freedom degree are in local numerical value approximation composed of a local strengthening interpolation primary function and a coefficient to be solved, and in the process of constructing the local numerical value approximation, the local strengthening interpolation primary function and the coefficient to be solved are combined. A weighting function is constructed by introducing a middle edge node into each overlapped triangular unit, numerical interpolation is completed on the premise that the unit decomposition characteristic is met, a magnetoelectric missile structure dynamic matrix control equation is established based on the numerical interpolation, an overlapped finite element numerical model of solver dynamic response is obtained, and the magnetoelectric missile structure dynamic matrix control equation is obtained. After proper boundary conditions and external excitation are applied, high-precision forecasting of the dynamic response of the magnetoelectric elastic structure can be completed. According to the method for calculating the dynamic response of the magnetoelectric elastic structure based on the overlapped triangular units, the calculation efficiency and the calculation precision in the prior art are improved, and meanwhile the method has high grid adaptability.
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