PMI泡沫夹层复合材料天线罩的振动特性分析
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摘要
泡沫夹芯结构复合材料可满足与天线罩透波和轻质高强的要求。采用ANSYS Workbench平台对某型天线罩进行模态分析,得到了PMI泡沫夹芯结构复合材料天线罩的固有频率振动特性分析,通过等加速度等效原则进行应力响应分析,结果表明天线罩的等效应力、变形的响应在1σ水平下较小,其结构在振动条件下是可靠的。
A composite sandwich structure with PMI foam core can meet the requirements of radome for wave transparency, lightweight and high strength. This article uses ANSYS Workbench platform to make model analysis for a certain type of radome, obtaining the vibration characteristics at inherent frequency of PMI foam-core sandwich radome. Through the analyses on the acceleration response and equivalent stress response, it is shown that the equivalent stress and deformation response of radome at 1 sigma level is small,and thus its structure under vibration is reliiable.
A composite sandwich structure with PMI foam core can meet the requirements of radome for wave transparency, lightweight and high strength. This article uses ANSYS Workbench platform to make model analysis for a certain type of radome, obtaining the vibration characteristics at inherent frequency of PMI foam-core sandwich radome. Through the analyses on the acceleration response and equivalent stress response, it is shown that the equivalent stress and deformation response of radome at 1 sigma level is small,and thus its structure under vibration is reliiable.
引文
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[3]韦生文.A型夹芯复合材料在地面雷达天线罩中的应用[J].纤维复合材料,2005,(2):153-159.
[4]裴晓园,陈利,李嘉禄,等.天线罩材料研究进展[J].纺织学报,2016, 37(12):153-159.
[5]许京荆. ANSYS 13.0 Workbench数值模拟技术[M].北京:中国水利水电出版社,2012.
[6]王新敏.ANSYS结构动力学分析与应用[M].北京:人民交通出版社,2014.
[7]汪海,沈真.复合材料手册[M].上海:上海交通大学出版社,2016.
[8]袁家军.卫星结构设计与分析[M].北京:宇航出版社,2004.
[9]国防科学技术工业委员会.舰船环境条件要求机械环境:GJB1061.1—91[S].1992.
[10]中国人民解放军总装备部.军用装备实验室环境试验方法第16部分:振动试验:GJB150.16A—2009[S].2009.