华中科技大学学报（自然科学版）2013，Vol.41Issue(2)：41-47,7.
运行工况下舰船振动-声传递路径分析及试验
Theocratical analysis and experimental validation of vibrationacoustic transferring paths of ships under operational conditions
摘要
Abstract
To identify and quantify noise source and transmission path of ships, the main problems arisen from operational transfer path analysis (OPA) were analyzed. The equivalent vibration source which based on the difference of the displacement response of isolator at both ends was proposed, and the multiple coherence functions established by the partial coherence theory were used to detect whether important transmission path were omitted. The ill-posed problem of matrix inversion was avoided effectively by truncated total least squares (TTLS). The test of vibration and acoustic radiation of ship was implemented at the sea, and the data of noise and structural vibration were collected simultaneously. Then, the OPA model was validated based on the test. The results show that the main problems of OPA are settled efficiently, and the OPA model can quantify the noise source and identify the transmission path of ship effectively and accurately.关键词
工况传递路径分析/噪声源/交叉耦合/声贡献量/相干Key words
operational transfer path analysis (OPA)/ noise source/ cross-coupling/ sound contribution/ coherence分类
交通工程引用本文复制引用
张磊,曹跃云,杨自春,何元安..运行工况下舰船振动-声传递路径分析及试验[J].华中科技大学学报（自然科学版）,2013,41(2):41-47,7.基金项目
教育部新世纪优秀人才支持计划资助项目 （）
武器装备预研基金资助项目. （）
