摘要
以一带有浮筏隔振装置的舰船模型为对象 ,利用ANSYS软件的有限元分析以及试验手段 ,对其隔振性能进行了研究。将船体与浮筏装置作为一个系统 ,建立其三维有限元振动分析模型 ;以降低船体结构振动能量为目标 ,从基础刚性与阻尼以及隔振器刚度与阻尼等条件出发 ,对发动机激励作用下的浮筏装置与船体的振动特性进行了分析 ;通过系统结构参数的优化 ,探讨了实现良好隔振特性的途径 ,为舰船的减振降噪设计提供了依据。通过理论和试验两方面的研究与对比 ,得到有工程应用价值的若干结论。
In this paper, the dynamical properties of a ship model which was equipped with the floating draft installation were investigated. The finite element analysis was carried out with ANSYS software and the performance of vibration isolation was surveyed through the experiment. Aiming at reducing the energy of structure-borne sound of the ship, the three-dimensional finite element model was setup and then analyzed in which the floating raft system and the ship were treated as a whole. Based on the factors of non-rigidity foundation as well as the damping and rigidity of isolators, the optimization of structural parameters was discussed. The way to improve the good quality of vibration and sound reduction was investigated, and then a series of conclusions which are valuable in engineering were derived.
出处
《华东船舶工业学院学报》
EI
2001年第2期72-76,共5页
Journal of East China Shipbuilding Institute(Natural Science Edition)
基金
跨行业基金项目! (院编 972 18)
关键词
舰船
浮筏
隔振
有限元方法
试验研究
ships and warships
floating raft
vibration isolation
finite element methods
experimental research
