A Hybrid Finite Element Method - Kirchhoff Approximation Method for Modeling Acoustic Scattering from an Underwater Vehicle Model with Alberich Coatings with Periodic Internal Cavities

被引:1
作者
Yang, Fan [1 ]
Peng, Zilong [1 ,3 ]
Song, Hao [2 ]
Tang, Yuhang [3 ]
Miao, Xuhong [3 ]
机构
[1] Jiangsu Univ Sci & Technol, Sch Energy & Power, Zhenjiang, Peoples R China
[2] Syst Engn Res Inst, Beijing, Peoples R China
[3] PLA, Unit 92578, Beijing, Peoples R China
基金
中国国家自然科学基金;
关键词
anechoic tile; Kirchhoff approximation; target strength; echo characteristic;
D O I
10.24425/aoa.2024.148777
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
Anechoic tiles can significantly reduce the echo intensity of underwater vehicles, thereby increasing the difficulty of detecting such vehicles. However, the computational efficiency of conventional methods such as the finite element method (FEM) and the boundary element method (BEM) has its limitations. A fast hybrid method for modeling acoustic scattering from underwater vehicles with anechoic tiles with periodic internal cavities, is developed by combining the Kirchhoff approximation (KA) and FEM. The accuracy and rapidity of the KA method were validated by FEM. According to the actual situation, the reflection coefficients of rubber materials with two different structures under rigid backing are simulated by FEM. Using the KA method, the acoustic scattering characteristics of the underwater vehicle with anechoic tiles are obtained by inputting the reflection coefficients and the target's geometric grid. Experiments on the monostatic target strength (TS) in the frequency range of 1 to 20 kHz and time domain echo characteristics of acoustic scattering on a benchmark scale model with anechoic tiles are conducted. The research results indicate that the TS values and echo characteristic curves of the KA solutions closely approximate the experimental results, which verifies the accuracy of the KA method in calculating the TS and echo characteristics of underwater vehicles with anechoic tiles.
引用
收藏
页码:209 / 219
页数:11
相关论文
共 26 条
  • [11] Modeling High-Frequency Backscattering from a Mesh of Curved Surfaces Using Kirchhoff Approximation
    Lavia, E. F.
    Gonzalez, J. D.
    Blanc, S.
    [J]. JOURNAL OF THEORETICAL AND COMPUTATIONAL ACOUSTICS, 2019, 27 (04)
  • [12] Time-domain Kirchhoff model for acoustic scattering from an impedance polygon facet
    Lee, Keunhwa
    Seong, Woojae
    [J]. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 2009, 126 (01) : EL14 - EL21
  • [13] LIu B, 2020, Research on acoustic scattering characteristics of typical structures of MUUV in Chinese, DOI [10.27307/d.cnki.gsjtu.2020.002589, DOI 10.27307/D.CNKI.GSJTU.2020.002589]
  • [14] 船坞登陆舰声散射时频特征数值及试验研究
    刘慧
    彭子龙
    范军
    吴锟
    [J]. 声学技术, 2019, 38 (02) : 147 - 152
  • [15] [刘进伟 Liu Jinwei], 2023, [兵工学报, Acta Armamentarii], V44, P517
  • [16] Lu D, 2014, Researches on acoustic scattering of elastic target on finite element methods
  • [17] BACKSCATTERING NEAR THE COINCIDENCE FREQUENCY OF A THIN CYLINDRICAL-SHELL - SURFACE-WAVE PROPERTIES FROM ELASTICITY THEORY AND AN APPROXIMATE RAY SYNTHESIS
    MARSTON, PL
    SUN, NH
    [J]. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1995, 97 (02) : 777 - 783
  • [18] NELL C.W., 2003, Technical report
  • [19] A Kirchhoff approximation-based numerical method to compute multiple acoustic scattering of a moving source
    Pignier, Nicolas J.
    O'Reilly, Ciaran J.
    Boij, Susann
    [J]. APPLIED ACOUSTICS, 2015, 96 : 108 - 117
  • [20] Floquet-Bloch理论在频散曲线计算中的应用
    童韫哲
    范军
    王斌
    [J]. 声学技术, 2020, 39 (01) : 11 - 14