直接声场仿真与试验技术研究  

Research on Direct Field Acoustic Simulation and Testing

作　　者：马蕾 何斌[2] 焦艳梅 宋之恺 MA Lei;HE Bin;JIAO Yan-mei;SONG Zhi-kai(Shanghai Institute of Spacecraft Equipment,Shanghai 200240,China;Institute of Launch Dynamics,Nanjing University of Science and Technology,Nanjing 210094,China;School of Physical and Mathematical Science,Nanjing Tech University,Nanjing 211816,China)

机构地区：[1]上海卫星装备研究所,上海200240 [2]南京理工大学发射动力学研究所,南京210094 [3]南京工业大学数理科学学院,南京211816

出　　处：《强度与环境》2022年第6期29-37,共9页Structure & Environment Engineering

基　　金：江苏省基础研究计划(自然科学基金)青年基金项目,江苏省科技厅,(BK20202687)。

摘　　要：为了提高地面力学环境试验的效率、缩短试验周期、降低试验成本,直接声场试验技术近年来得到国内外学者的广泛关注。直接声场试验是一种不需要混响室或行波管等大型基建和复杂的高压大流量气源系统,只需将试件置于电动扬声器组成的阵列内,通过电声场对产品进行噪声激励的便捷的噪声试验方法。本文开展了直接声场模拟试验技术与噪声试验有效性分析研究,设计了直接声场模拟试验方案并搭建了试验系统,验证了直接声场试验方法的有效性。为卫星噪声试验、声振联合试验提供高效可靠的噪声试验解决方案和技术支撑。In order to improve the efficiency of the mechanical environment simulation test,shorten the experimental period,and reduce the cost of the test,direct field acoustic testing technology has received more and more attention from the researchers.Direct Field Acoustic Testing(DFAT)is a convenient acoustic test method that does not require a reverberation chamber,a traveling-wave tube or the Nitrogen gas source.It is only need to place the loudspeaker array around the test product,and the electric speakers perform the acoustic excitation on the product through the direct field.This report illustrates the DFAT and the acoustic test effectiveness analysis research,designs the DFAT program.The DFAT test system is built,and the efficiency of DFAT is verified.This technology provides the efficient and reliable acoustic test solution and technical support for the acoustic test and vibration-acoustic-combination test.

关 键 词：直接声场 噪声试验 扬声器阵列 声压级 

分 类 号：V416.2[航空宇航科学与技术—航空宇航推进理论与工程]