摘要
运用结构有限元法与声学边界元法,对小水线面双体船振动声学特性数值计算问题进行了研究。通过结构动力响应分析,获得结构振动响应特性参数。以船体结构频响分析计算结果为声学边界条件,对小水线面双体船近场声学特性进行了边界元计算。对比不同工况下的结构声学特性,为进一步实现结构减振降噪提供参考。
The design of vibration characters are very important when design the structure of a ship,especially in some special used ships.This article is about some research method in vibration characters＇ analysis.The numerical analysis of structural-acoustic characters of small waterplane area twin hull ship（SWATH）was carried out by use of structural FEM and acoustic BEM.The vibration response characters were computed based on FEM model.Taking the vibration characters from FEA as boundary conditions,the acoustic characters of the SWATH in near field were calculated by using the direct BEM in the end,the have compare the acoustic character of the two state.It support the dynamic response and acoustic optimization.
出处
《舰船科学技术》
2010年第11期17-20,共4页
Ship Science and Technology
关键词
小水线面双体船
结构-声辐射
边界元法
数值分析
small waterplane area twin hull ship
structural-acoustic radiation
BEM
numerical analysis
