浮筏隔振系统隔振性能优化设计研究  

Optimization Design Study on Vibration Isolation Characteristics of Floating Raft System

作　　者：张维英[1] 冯燕茹[1] 刘梓顼[1] 张军[2] 

机构地区：[1]大连海洋大学航海与船舶工程学院,辽宁大连116023 [2]大连交通大学交通运输工程学院,辽宁大连116028

出　　处：《船舶工程》2012年第5期20-23,共4页Ship Engineering

基　　金：辽宁省教育厅科技厅项目(No.200900J005-A)

摘　　要：建立了板式浮筏隔振系统有限元模型,用有限元直接法计算了隔振系统对动力学激励的加速度响应,以中间筏架各局部厚度为设计变量,以中间筏架重量为约束,以减小弹性基础振动、增加振动隔离为目标建立了优化数学模型,用可行方向法实现了隔振系统的优化设计。实例结果表明,隔振系统的优化设计可在筏架重量不增加、通过重新分布筏架的重量就可以减小基础的振动,增加浮筏系统的隔振性能;优化后基础的振动显著降低,极大地提高了隔振系统的隔振性能。The finite element model of floating raft system is set up.The acceleration response of the vibration isolation system on the dynamic urge is calculated by FEM direct method.Then an optimized mathematic model is formulated,with the local thicknesses of middle raft frame taken as design variables,the weight of middle raft farm taken as constraints,the decrease flexible basic vibration and increase vibration isolation taken as objections.The optimized design is accomplished by the feasible direction method.The example result shows that the vibration isolating performance is greatly enhanced by thickness redistribution of middle raft frame while the weight is not added.After optimization,the basic vibration is obviously decreases,which largely improves the performance of the vibration isolation system.

关 键 词：浮筏 隔振 有限单元法 优化设计 

分 类 号：U661.44[交通运输工程—船舶及航道工程]