Low-frequency target strength analysis of benchmark submarine with acoustic coating
英文摘要：Acoustic coating absorbs incident waves and reduces radiated noise, and is one the most commonly used methods for acoustic stealth. Therefore, the monostatic low-frequency target strength of benchmark submarine with acoustic coating is analyzed. First, the acoustic-shell-structure coupling finite element model is established and validated. Second, the target strength of single-hull benchmark submarine is analyzed. The results indicate that acoustic coating changes the peaks and notches of the target-strength curves. At some particular frequencies and incident angles, the target strength with acoustic coating is greater than that without acoustic coating. Statistically, acoustic coating reduces the average target strength slightly. Third, the target strength of double-hull benchmark submarine is analyzed. The acoustic coating in the external hull changes the peaks and notches of the target-strength curves and reduces the average target strength slightly. However, additional acoustic coating in the internal hull has little effect.
2019,41(7): 20-24 收稿日期：2018-07-21
DOI：10.3404/j.issn.1672-7649.2019.07.004
分类号：TB566
基金项目：国家自然科学基金资助项目（11772304）
作者简介：冯雪磊(1989-),男,高级工程师,研究方向为声场计算与分析
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