基于有限元动力计算的基座隔振性能研究  

On the Vibration Isolation of Frames Based on Finite Element Dynamic Analysis

作　　者：朱成雷 魏强[1] 徐志亮[1] 郑超凡[1] 翁章卓[1] 

机构地区：[1]中国舰船研究设计中心,武汉430064

出　　处：《船海工程》2014年第3期28-32,共5页Ship & Ocean Engineering

摘　　要：为了进一步分析基座在船舶减振降噪中的作用,根据阻抗失配原理设计建立4种基座模型,并用数值方法对其隔振效果进行研究。隔振效果用外板均方速度级、加速度振级落差和传递率表示,结果表明桁架式基座在低频段具有较好的隔振效果,槽钢减弱了基座在中频段的隔振效果。In order to analysis the function of mounting in vibration isolation , 4 models of mounting were built based on the theory of impedance mismatch to research the effect of vibration isolation considering the vibration level difference and transmissi -bility.The result showed the lattice tower is good at vibration isolation in low frequency , whiel the U-bar reduces the vibration i-solation at medium frequency .

关 键 词：基座 隔振 振动特性 机械阻抗 

分 类 号：U661.44[交通运输工程—船舶及航道工程]