噪声与振动控制Issue(1)：65-69,5.DOI:10.3969/j.issn.1006-1335.2016.01.014
船舶主机-双层底耦合振动模态综合研究
Ship’s Engine and Double-layer Bottom Coupled Vibration Analysis Using Component Mode Synthesis
摘要
Abstract
An approach for analyzing the ship’s engine and double-layer bottom coupled vibration was presented using the component mode synthesis (CMS) method. In traditional modal analysis of this coupled system, simplifying the engine as a concentrated mass can’t reflect the effects of engine vibration, and a complete 3D finite element model may drastically increase computational cost. In this paper, the CMS method was applied to deal with these problems. The modal synthesis of the engine and the double-layer bottom was accomplished by MATLAB, and the order-reduced coupled system matrices were obtained. Solutions of an example illustrate that this approach can effectively reduce the cost of computation and retain the vibration information of the coupled system. Also, the solutions demonstrate the advantages of this approach that only the mode information of the modified substructure need to be computed when the substructure is modified.关键词
振动与波/双层底/耦合振动/有限元法/模态综合Key words
vibration and wave/double-layer bottom/coupled vibration/finite element analysis/component mode synthesis分类
交通工程引用本文复制引用
秦文,王德禹..船舶主机-双层底耦合振动模态综合研究[J].噪声与振动控制,2016,(1):65-69,5.基金项目
教育部、财政部“船舶数字化智能设计系统”资助项目(No.201335) （No.201335）
