船舶前置导管模态的参数敏感性分析  

Parameter sensitivity analysis of wake equalizing duct mode

作　　者：徐博 吴嘉蒙[1,2] 李平书 胡帆[1,2] 蔡诗剑 XU Bo;WU Jiameng;LI Pingshu;HU Fan;CAI Shijian(Marine Design and Research Institute of China,Shanghai 200011,China;Shanghai Key Laboratory of Ship Engineering,Shanghai 200011,China)

机构地区：[1]中国船舶及海洋工程设计研究院,上海200011 [2]上海市船舶工程重点实验室,上海200011

出　　处：《舰船科学技术》2025年第1期102-107,共6页Ship Science and Technology

摘　　要：以多个已经实船应用的前置导管作为分析对象,基于虚拟质量法的基本理论,采用通用有限元分析软件MSC/Nastran对前置导管的固有模态进行参数敏感性分析。分析模型范围对前置导管模态的影响,探讨导管模态分析更加可靠准确的建模范围;分析肘板、内部隔板布置、外板厚度对导管模态的影响,论证结构设计参数对前置导管振动特性的影响,指导导管结构设计和振动性能评估。A number of wake equalizing ducts that have been applied in real ships are taken as the analysis objects.Based on the basic theory of virtual mass method,the parameter sensitivity analysis of the natural modes of the duct is carried out by using the general finite element analysis software MSC/NASTRAN.Analyze the influence of the model range on the modal of the duct,and explore the more reliable and accurate modeling range of the duct modal analysis;And analyze the influence of brackets,internal partition layout,and outer plate thickness on the duct mode,and demonstrate the influence of structural design parameters on the vibration characteristics of the wake equalizing duct to guide the structural design and vibration performance evaluation of the duct.

关 键 词：前置导管 虚拟质量法 模态 敏感性分析 

分 类 号：U662[交通运输工程—船舶及航道工程]