本文利用声学计算软件THAFTS-Acoustic，对1艘SWATH船支柱体初始结构方案的声辐射传递函数进行计算，并分离出对应的对声辐射贡献最大的模态振型和频率。以包含这些模态振型的某一段频率区间内结构的振动响应总级为优化的目标函数，利用ISIGHT和Ansys软件对板架结构参数进行优化，并对优化后的结构方案的声辐射传递函数进行计算，验证了优化方案的有效性。在优化方案的基础上，对支柱体结构不同的阻尼敷设方案进行对比分析，为SWATH船低噪声的优化设计提供了支撑。
The acoustic radiation transfer function on initial design plan of pillars in a SWATH is calculated by THAFTS-Acoustic software, and corresponding mode shapes and frequencies whose contribution is largest to the acoustic radiation peaks are separated out. Taking the total level of the vibration response in a frequency interval which contains the mode shapes as objective function, the structure parameters of the pillar grillages are optimized by the ISIGHT and ANSYS software. What's more, the results of optimization plan are validated. Based on the optimization design, several layout plans on damping material are compared, and the low noise optimization design on the SWATH is provided.
2019,41(3): 24-30 收稿日期：2018-06-05
DOI：10.3404/j.issn.1672-7649.2019.03.005
分类号：U661.44
基金项目：国家青年科学基金资助项目（51709241）；江苏省青年科学基金资助项目（BK20170216）
作者简介：林长刚(1986-),男,工程师,主要从事船舶结构与振动噪声设计相关工作
参考文献：
[1] 林吉如, 石理国, 尤国红, 等. 小水线面双体船波浪设计载荷估算方法[J]. 中国造船, 2008, 49(3):104-111 LIN Ji-ru, SHI Li-guo, YOU Guo-hong, et al. The method for evaluating the design wave loads on SWATH ship[J]. Shipbuilding of China, 2008, 49(3):104-111
[2] 龚家烨, 李云波, 常赫斌. 小水线面双体船阻力及航态预报方法[J]. 哈尔滨工程大学学报, 2015, 36(11):1427-1432 GONG Jia-ye, LI Yun-bo, CHANG He-bin. Prediction method for resistance and hull gesture of a small waterplane area twin hull[J]. Journal of Harbin Engineering University, 2015, 36(11):1427-1432
[3] 黄毅. 小水线面双体船噪声环境特性研究[D]. 哈尔滨:哈尔滨工程大学, 2011. HUANG Yi. Research on noise environment characteristics of small waterplane area twin hull[D]. Harbin:Harbin Engineering University, 2011.
[4] GD 06-2005, 小水线面双体船指南[S]. 中国船级社, 2005. GD 06-2005, Guidelines small waterplane area twin hull craft[S]. China Classification Society, 2005.
[5] 蔡小阳. 小水线面双体船的运用与发展[J]. 舰船科学技术, 2012, 34(增刊2):61-64. CAI Xiao-yang. SWATH vessels application and development[J]. Ship Science and Technology, 2012, 34(S2):61-64.
[6] 邹明松, 刘艳敏, 祁立波. 舷间充水双层弹性薄球壳结构声辐射研究[J]. 船舶力学, 2013, 17(1-2):155-163 ZOU Ming-song, LIU Yan-min, QI Li-bo. Structural-acoustic radiation of elastic thin spheric double-shell with contained water[J]. Journal of Ship Mechanics, 2013, 17(1-2):155-163
[7] SKELTON E A. JAMES J H. Theoretical acoustics of underwater structures[M], Imperial College Press, London, 1997.
[8] 何祚镛. 结构振动与声辐射[M]. 哈尔滨:哈尔滨工程大学出版社, 2001. HE Zuo-yong. Structural vibration and acoustic radiation[M]. Harbin:Harbin Engineering University press, 2001.
[9] WU Y S. Hydroelasticity of floating bodies[D]. Ph. D. Thesis, London, Brunel University, 1984.
[10] PRICE W G, WU Y S. Hydroelasticity of marine structure[C]//In:Sectional Lecture S-10, the 16th In. Congress of Theoretical and Applied Mechanics (IUTAM), Lyngby, Denmark, 1984.
[11] 邹明松, 吴有生, 沈顺根, 等. 考虑航速及自由液面影响的声介质中三维结构水弹性力学研究[J]. 船舶力学, 2010, 14(11):1304-1311 ZOU Ming-song, WU You-sheng, Shen Shun-gen, et al. Three-dimensional hydroelasticity with forward speed and free surface in acoustic medium[J]. Journal of Ship Mechanics, 2010, 14(11):1304-1311
[12] ZOU Ming-Song, WU You-Sheng, LIU Yan-Min. The application of three-dimensional hydroelastic analysis of ship structures in Pekeris hydro-acoustic waveguide environment[J]. Acta Mechanica Sinica, 2014, 30(1):59-66
[13] 邹明松, 吴有生, 孙建刚, 等. 基于船舶三维声弹性理论的计算技术[J]. 声学技术, 2016, 35(6):112-115 ZOU Ming-song, WU You-sheng, SUN Jian-gang, et al. Computational techniques based on the three-dimensional sono-elasticity of ships[J]. Technical Acoustics, 2016, 35(6):112-115
[14] 王甜, 黄小平, 韩正君. 球扁钢等效的方法研究[J]. 船舶工程, 2013, 35(3):106-109 WANG Tian, HUANG Xiao-ping, HAN Zheng-jun. Equivalent investigation of flat-bulb steel[J]. Ship Engineering, 2013, 35(3):106-109
[15] 陶尧森. 船舶耐波性[M]. 上海:上海交通大学出版社, 1985.
[16] 段绍伟, 向湘林, 沈蒲生. 复杂阻尼结构阻尼模型研究[J]. 振动与冲击, 2011, 30(2):73-76 DUAN Shao-wei, XIANG Xiang-lin, SHEN Pu-sheng. Damping model of a complex structure[J]. Journal of Vibration and Shock, 2011, 30(2):73-76
