摘要
传统的基于有限元的建模和计算方法在中高频条件下得出的结果不精确,因此,整流罩在中高频条件下结构振动、声辐射以及声振耦合等问题,可以用统计能量分析(SEA)方法和有限元-统计能量分析(FE-SEA)法进行分析。通过ESI VA ONE软件建立整流罩的结构FE模型以及划分内部声腔子系统,分析不同子系统在声振条件下内部声压级的大小。仿真结果表明在声振耦合条件下,整流罩的声腔子系统在不同的部位声压级大小不同,以及声压级大小随频率变化。
The traditional finite element-based modeling and calculation methods are inaccurate under the medium and high fre⁃quency conditions.Thus,the problems of structural vibration,acoustic radiation and acoustic-vibration coupling of the fairing un⁃der the conditions can be addressed using the statistical energy analysis(SEA)method and the hybrid finite element-statistical en⁃ergy analysis(FE-SEA)method.The structural FE model of the fairing and the division of the internal acoustic cavity subsystem were established by the VA one software in order to analyze the internal sound pressure level of different subsystems under acous⁃tic vibration conditions.The simulation results showed that under the acoustic-vibration coupling condition,the sound pressure level of the cavity subsystem varies in different parts,and changes with frequency.
作者
蒋卓亚
陈长征
JIANG Zhuoya;CHENG Changzheng(School of Mechanical Engineering,Shenyang University of Technology,Shenyang Liaoning 110870,China)
出处
《辽宁科技学院学报》
2025年第2期28-31,共4页
Journal of Liaoning Institute of Science and Technology
关键词
声振耦合
FE-SEA方法
ESI
VA
ONE
中高频振动
Acoustic-vibration coupling
Hybrid FE-SEA method
ESI VA ONE
Medium and high frequency vibration
