韩丽, 高珂佳, 秦朝红. 考虑声场空间相关的结构声振响应预示方法[J]. 航天器环境工程, 2020, 37(3): 245-249 DOI: 10.12126/see.2020.03.006
引用本文: 韩丽, 高珂佳, 秦朝红. 考虑声场空间相关的结构声振响应预示方法[J]. 航天器环境工程, 2020, 37(3): 245-249 DOI: 10.12126/see.2020.03.006
HAN L, GAO K J, QIN Z H. A method for predicting the vibro-acoustic structure response with consideration of acoustic spatial correlation[J]. Spacecraft Environment Engineering, 2020, 37(3): 245-249 DOI: 10.12126/see.2020.03.006
Citation: HAN L, GAO K J, QIN Z H. A method for predicting the vibro-acoustic structure response with consideration of acoustic spatial correlation[J]. Spacecraft Environment Engineering, 2020, 37(3): 245-249 DOI: 10.12126/see.2020.03.006

考虑声场空间相关的结构声振响应预示方法

A method for predicting the vibro-acoustic structure response with consideration of acoustic spatial correlation

  • 摘要: 文章研究利用有限元法进行声振响应预示时完整考虑空间相关的声场载荷施加方法,并基于MSC.Nastran软件进行算法研究及二次开发,编制形成软件并预示航天飞行器噪声试验声振响应;预示数据与试验数据的对比结果验证了该方法的有效性。该方法解决了传统中高频响应预示方法不能给出局部结构振动响应的问题,为航天飞行器力学环境预示提供了一种新途径。

     

    Abstract: This paper investigates the way to predict the vibro-acoustic responses of the acoustic load by the finite element method with consideration of its whole spatial correlations. The algorithm and the secondary development are based on the MSC.Nastran software. The comparison between the predicted vibro-acoustic responses obtained by our software and the data measured in the reverberant acoustic experiment shows that our method is applicable with a reasonable margin of deviations. This method is superior to the traditional high-frequency response prediction method, as the local responses can also be obtained, thus it may serve as a new approach to predict the vibro-acoustic responses of aircraft.

     

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