舰船振动声辐射特性模型试验简化方法研究  

Research of model test simplified method of hull structures' vibration and sound radiation

作　　者：李青宇 计方[2,3] 

机构地区：[1]西北工业大学机电学院,西安710072 [2]中国舰船研究院,北京100192 [3]哈尔滨工程大学船舶工程学院,哈尔滨150001

出　　处：《青岛理工大学学报》2014年第3期107-112,共6页Journal of Qingdao University of Technology

基　　金：中国博士后科学基金资助项目(2012M520713)

摘　　要：舰船水下振动声辐射试验模型简化方法研究对于舰船噪声测量具有重要的参考价值.依据实船结构,提出了多种舰船振动声辐射模型试验简化方案;联合应用声固耦合法及统计能量法,通过数值试验对比分析了各简化方案的水下振动及声辐射特性,探索了模型缩尺比对舰船简化方案声学特性的影响规律.结果表明:从验证指导舰船结构声学设计的角度出发,方案二均能精确地反映舰船的振动及声辐射特性,误差小于2.5dB;为了兼顾经济因素,建议选取方案六缩比模型,可简化模型质量约1/2.初步给出了兼顾评估精度和试验经济性的舰船振动声辐射模型简化方法.The model test simplified method of hull structures＇ vibration and sound radiation is of great importance to the ship noise measurement. Based on the prototype hull structures, kinds of model test simplified programmer of hull structures＇ vibration and sound radiation are summed up in the paper. Combination of acoustic-structural coupled method and Statistical Energy Analysis, the characteristics of vibration and sound radiation are researched through numerical calculation. The influences of scaling factor on simplified models＇ vibration and sound radiation characteristics are also done. The results show that the prototype characteristics of vibration and sound radiation can be accurately reflected by the program No. 2 in order to verify the structure-borne design. Concerned with economic performance, scaled program No. 6 is suggested. The model test simplified method of hull structures＇ vibration and sound radiation which can balance the appraisal precision, and economic performance is summed up.

关 键 词：舰船振动声辐射 模型试验 简化方案 缩尺比 

分 类 号：U661.44[交通运输工程—船舶及航道工程]