高频声振环境动响应计算的统计能量法

Calculating Dynamic Response of High Frequency Acoustic-Vibration Environment with Statistical Energy Analysis Method

对高频问题,为了捕捉到结构特征长度,有限元和边界元需要很小的网格尺度,这样数值计算的工作量相当大,甚至不可实现。笔者研究求解了航天飞行器仪器舱高频结构声振问题的统计能量方法,给出了用统计能量法计算的一般步骤;编程实现了动响应参数的计算,并对结果进行了分析。

For the problems of high-frequencies,in order to capture the structural characteristic length,many smaller mesh sizes is required for finite element or boundary element model,thus to make the computational work becoming considerable,even impossible implement.The statistic energy method for solving high-frequency structural acoustic-vibration problem of high speed aero-craft is studied in this paper.The basic principle of SEA was given,the dynamic response parameters were calculated by programming and its results were analyzed.