| 陈超,金江明,侯刘奖.湍流边界层激励下简支板位移场与辐射声场的逆向重建研究[J].高技术通讯(中文),2026,36(5):514~522 |
| 湍流边界层激励下简支板位移场与辐射声场的逆向重建研究 |
| Inverse reconstruction of displacement and radiated sound fields of a simply supported plate under TBL excitation |
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| DOI：10. 3772 / j. issn. 1002 - 0470. 2026. 05. 007 |
| 中文关键词: 湍流边界层； 声辐射； 声场重建； 结构声系统 |
| 英文关键词: turbulent boundary layer, acoustic radiation, sound field reconstruction, structural-acoustic system |
| 基金项目: |
| 作者 | 单位 | | 陈超 | （浙江工业大学机械工程学院声学与振动实验室杭州 310014) | | 金江明 | | | 侯刘奖 | |
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| 摘要点击次数: 18 |
| 全文下载次数: 11 |
| 中文摘要: |
| 为了实现高精度湍流边界层(turbulent boundary layer，TBL)激励下随机辐射声场重建，系统揭示TBL激励下结构动力学响应规律，本文提出了逆向重建TBL激励下简支板位移与辐射声场的方法。通过将响应声场分解为简支板在各个波数平面波激励下的声响应叠加，构建了结构-声系统传递函数，重建了TBL激励下简支板辐射的声场和响应的位移场。数值仿真验证了重建方法的精确性，并讨论了截断波数对声场重建结果的影响。重建过程中，应合理调整截断波数覆盖声场或位移场重建所需的主要波数成分。实验结果表明，该方法能精确重建TBL激励下简支板的空间辐射声场和响应位移场。 |
| 英文摘要: |
| This study aims to achieve high-precision reconstruction of randomly radiated sound fields under turbulent boundary layer (TBL) excitation and systematically reveal the dynamic response of structures under TBL excitation. A method for inversely reconstructing the radiated sound field and displacement field of a simply supported plate under TBL excitation is proposed. A structural-acoustic system transfer function is established, decomposing the response sound field into superpositions of acoustic responses of the simply supported plate under plane wave excitations at various wavenumbers. This allowed for the inverse reconstruction of the radiated sound field and the responsive displacement field of the plate under TBL excitation. The precision of the reconstruction method is validated through numerical simulations, and the selection principles for truncation wavenumbers are discussed. Experimental results indicate that the proposed method can precisely reconstruct the spatial radiated sound field and responsive displacement field of the simply supported plate under TBL excitation. During the reconstruction process, it is imperative to appropriately adjust the truncation wavenumbers to encompass the primary wavenumber components required for the reconstruction of the sound and displacement fields. |
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