摘要
交替运用结构有限元法与声学边界元法 ,对某型艇振动声学特性数值计算问题进行了研究 .建立了全船三维有限元分析模型 ,通过频响分析计算 ,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 ,建立了全船三维边界元声学分析模型 ,并采用直接边界元法 ,对全船近场声学特性进行了计算 .对比计算结果与实测数据表明 ,该计算方法是可行的 。
The numerical analysis of vibro acoustic characters of a ship was carried out by use of structural FEM and acoustic BEM. The vibration response characters were computed based on the 3 D FE model of a ship with software NASTRAN. Taking the vibration characters from FEA as boundary conditions, a 3 D acoustic BE model was constructed. At last, the acoustic characters of the ship in near field were calculated by using the direct BEM with software SYSNOISE. The computational results were compared with the experiments, and it shows the effectiveness and validity of the proposed method.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2002年第11期1537-1539,1543,共4页
Journal of Shanghai Jiaotong University
关键词
船舶
振动
声学
数值分析
ships
vibration
acoustics
numerical analysis
