登录
注册
E-alert
登录
注册
E-alert
RESEARCH ON MECHANICAL PROPERTIES AND DIAPHRAGM EFFECT OF BLOCK METAL FRAMES RADOME WITH FLEXIBLE SKIN
-
摘要: 雷达天线罩一方面为雷达提供独立、封闭的空间，保障雷达的安全运行，另一方面为天线提供"透明"的发射和接收电磁窗口，确保雷达正常、可靠工作，因此天线罩的力学性能研究对天线罩本身的安全以及其内部雷达设备的安全具有十分重要的意义。分块金属桁架天线罩是典型的单层网壳结构，基于有限元仿真计算（FEA）介绍柔性蒙皮分块金属桁架天线罩的力学性能分析流程，并以某28.5 m金属桁架天线罩为例，进行了找形、静力学、动力学和稳定性分析，在此基础上，开展柔性蒙皮效应对天线罩力学性能影响的试验研究。分析结果表明，该天线罩在最严苛荷载条件下能够满足结构强度的要求，设计安全可靠，同时试验结果显示，天线罩的蒙皮效应明显，能显著提升天线罩的整体承载能力，进一步提高了天线罩的结构安全性。Abstract: Radome not only provides independent and closed space for radar to ensure the safe operation of radar, but it also radome provides "transparent" transmitting and receiving electromagnetic window for antenna to ensure normal and reliable operation of radar. Therefore, the research of the mechanical properties of the radome is of great significance to the safety of the radome itself and the safety of its internal radar equipment.Block metal frames radome is a typical single-layer lattice shell structure, based on FEA, the mechanical properties analysis flow of block metal frames radome with flexible skin was elaboratedin in this paper. Taking a metal frames radome which the diameter is 28.5 m as an example, the form-finding, statics, dynamics and stability analysis are carried out. On this basis, the diaphragm effect of flexible skin on the mechanical properties of radome was studied experimentally.The analysis results showed that the radome could meet the requirements of structural stiffness and strength under the most stringent load conditions,and the design was safe and reliable. At the same time, the experimental results showed that the diaphragm effect of the radome was obvious, which could significantly improve the overall bearing capacity of the radome and further improve the safety of the structure of radome.
-
Key words:
- block metal frames radome /
- flexible skin /
- mechanical properties /
- stability /
- diaphragm effect
-
杜耀惟. 天线罩电信设计方法[M]. 北京:国防工业出版社, 1993. 张强. 天线罩理论与设计方法[M]. 北京:国防工业出版社, 2014. 唐守柱, 何炳发, 王仁德. 金属空间桁架天线罩分析与研究[J]. 现代雷达, 2006, 28(4):62-64. 唐守柱, 刘兴贵, 何炳发. 球型毫米波金属桁架天线罩研究[J]. 现代雷达, 2015, 37(9):55-59. 夏邵华, 钱若军. 网壳结构非线性分析力学模型研究[J]. 河海大学学报, 1994, 22(6):65-70. 沈世钊, 陈昕, 林有军,等. 单层球面网壳的稳定性[J]. 空间结构, 1997, 3(3):3-12. 沈世钊. 网壳结构的稳定性[J]. 土木工程学报, 1999, 2(6):11-25. 曾银枝. 单层球面网壳结构的稳定性能研究[D]. 上海:同济大学, 2001. 曹正罡,范峰,沈世钊. 单层球面网壳的弹塑性稳定[J].土木工程学报, 2006(10):9-12. 顾磊, 王鹏, 武芳. ETFE气枕力学性能分析及其蒙皮效应研究[J]. 建筑结构学报, 2012, 33(5):38-45. 罗加智, 郑卫国, 吴乃森. 钢框架结构蒙皮效应的研究[J].工业建筑, 2005, 35(增刊):306-309. 郑谨, 张其林. 开洞压型板蒙皮效应的参数研究[J]. 建筑结构, 2006, 36(增刊):104-106. 中华人民共和国住房和城乡建设部. 建筑结构荷载规范:GB 50009-2012[S]. 北京:中国建筑工业出版社, 2012. 董石麟, 钱若军. 空间网格结构分析理论与计算方法[M]. 北京:中国建筑工业出版社, 2000. 期刊类型引用(1)
1. 孙立臣，娄培杰，李成杰，姬鹏辉. 基于离散元的平行双裂隙砂岩破裂特征和失稳机理研究. 矿业研究与开发. 2024(08): 182-189 . 
百度学术其他类型引用(0)
-
点击查看大图
计量
- 文章访问数: 134
- HTML全文浏览量: 8
- PDF下载量: 3
- 被引次数: 1
下载:
