声学超结构正向计算与性能预测方法、系统、设备及介质
An acoustic superstructure model was constructed using the wave finite element method, and the nonlinear eigenvalue problem was solved by combining the contour integral algorithm. This solved the computational efficiency problem of high-frequency analysis in complex acoustic superstructures and enabled efficient prediction and optimization design of vibration reduction and noise reduction performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CIVIL AVIATION UNIV OF CHINA
- Filing Date
- 2026-05-08
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies have low computational efficiency when dealing with complex acoustic superstructures and mid-to-high frequency analysis, making it difficult to meet the needs of engineering optimization design.
A forward calculation method for acoustic superstructures based on the wave finite element method is adopted. By constructing a finite element model with minimum repeating periodic elements, periodic boundary conditions are introduced, and the contour integral algorithm is used to solve the nonlinear eigenvalue problem. Characteristic wavenumbers are automatically matched, dispersion curves are plotted, and modal analysis is performed.
It enables efficient computation for high-frequency analysis of complex acoustic superstructures, provides design tools for large periodic structures, and supports sound insulation performance prediction and physically interpretable optimization design under service conditions.
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Figure CN122133412B_ABST