基于传递功率流评价的船载精密仪器隔振系统  

Vibration Isolation System of Shipborne Precision Instrument Based on Power Flow Evaluation

作　　者：韩翔宇 邓伟 田晓洁[1] 刘鹏[2] HAN Xiangyu;DENG Wei;TIAN Xiaojie;LIU Peng(School of Engineering,Ocean University of China,Qingdao 266100,Shandong,China;Institute of OceanographicInstrumentation,Qilu University of Technology(Shandong Academy of Sciences),Qingdao 266061,Shandong,China)

机构地区：[1]中国海洋大学工程学院,山东青岛266100 [2]齐鲁工业大学(山东省科学院)山东省科学院海洋仪器仪表研究所,山东青岛266061

出　　处：《船舶工程》2021年第5期16-21,共6页Ship Engineering

基　　金：山东省自然科学基金(ZR2019BEE072);山东省重点研发计划(2019GHY112038);山东省科学院青年基金(2019QN0039)。

摘　　要：针对现有船载精密仪器普遍采用的单层隔振结构的隔振效率不高、隔振效果不佳的缺点,以船载激光雷达为隔振对象,将浮筏结构作为隔振形式,将传递功率流作为评价指标,采用有限元分析方法讨论隔振结构在不同方向外激励作用下的隔振效果,并采用拓扑优化方法对浮筏结构中间阀架进行减重优化。结果表明,船载仪器设备在海洋环境下受到的激振频率作用的主要方向是垂直方向;采用浮筏隔振结构的船载仪器设备在低频段的振动作用能明显下降;采用拓扑优化后的隔振结构能在减小中间阀架质量的同时提高观测仪器的精度,并延长其使用寿命,验证了优化方法的正确性。The single-layer vibration isolation structure, which is widely used in the existing shipborne precision instruments, has the disadvantages of low vibration isolation efficiency and unsatisfactory vibration isolation effect. Ship-borne Lidar is taken as the vibration isolation object, floating raft structure is taken as the vibration isolation form, transferred power flow is taken as the evaluation index, and finite element analysis is taken as the technical means in this paper. The vibration isolation effect of vibration isolation structure under different directions of external excitation is discussed and analyzed. And the topological optimization method is used to optimize the weight reduction of the intermediate valve frame of floating raft structure. The results show that: the main direction of the excitation frequency of ship borne instrument and equipment in the marine environment is vertical;the low frequency vibration effect of ship borne instrument and equipment with floating raft vibration isolation structure can be reduced obviously;the weight of intermediate raft can be reduced, and the accuracy and service life of observation instrument are improved in the meantime after the topological optimization of vibration isolation structure, and thus the validity of the optimization is verified.

关 键 词：船载精密仪器 功率流 浮筏隔振系统 谐响应分析 拓扑优化 

分 类 号：U665.2[交通运输工程—船舶及航道工程]