某型雷达天线阵面流固耦合分析
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摘要
基于计算流体力学和弹性力学理论,联合应用Fluent软件与ABAQUS软件对某型雷达受风载荷条件下的刚强度进行了流固耦合模拟分析。对比了理论方法与直接耦合方法下雷达应力云图分布的不同;提取了瞬态流场的风压脉动频率特征;采用正弦载荷形式分析了雷达结构响应,为雷达设计过程中的刚强度校核提供更精确可靠的分析方法。
A fluid-solid coupling simulation process was carried out based on the computational fluid mechanics and elastic mechanics, focusing on the discussion of analysis method for the wind load computation.The business software Fluent and ABAQUS were used.With the analysis of the stress distribution, the differences of the theoretical model and direct simulation model of wind load were compared. The dominant frequency features of instantaneous integral wind force were derived and the structure response with sine wave load were computed, providing a more accurate analysis method for strength check in the process of radar antenna design.
A fluid-solid coupling simulation process was carried out based on the computational fluid mechanics and elastic mechanics, focusing on the discussion of analysis method for the wind load computation.The business software Fluent and ABAQUS were used.With the analysis of the stress distribution, the differences of the theoretical model and direct simulation model of wind load were compared. The dominant frequency features of instantaneous integral wind force were derived and the structure response with sine wave load were computed, providing a more accurate analysis method for strength check in the process of radar antenna design.
引文
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[2]周晓伟,赵智聪.某车载雷达总体布局设计[J].电子机械工程,2006,22(1):11-14.
[3]杨红军,李刚炎.车载雷达天线平台的负载特性及风载稳定性研究[J].机械制造,2008,46(2):46-52.
[4]任开峰,杨听广,朱志远.风廓线雷达天线结构设计[J].机械与电子,2009(7):19-21.
[5]杜强,杜平安.天线风载的数值模拟分析[J].现代雷达,2009,31(3):77-80.
[6]黄本才.结构抗风分析原理及应用[M].上海:同济大学出版社,2001.
[7]Frohlich J,Terzi D.Hybrid LES/RANS methods for the simulation of turbulent flow[J].Progress in Aerospace Sciences,2008,44(5):349-377.
[8]Kataoka H,Mizuno M.Numerical flow computation aroundaeroelastic 3Dsquare cylinder using inflow turbulence[J].Wind and Structures,2002,5(4):379-392.