Study On Wind Load Characteristics And Resistance Performance Of A Radar Structure

Vehicle radar as a commom ground radar,has been widely employed in various fields,plays an important role in the detection of corresponding targets.The wind load as the main lateral load of radar,is the key factor which affects the measure precision and the structure safety of the radar.The research object of this study is a parabolic vehicle radar.The six component coefficients is obtained by the rigid model wind tunnel test,based on the test results,the wind load characteristics and resistance performance are analyzed.The main work is as follows:(1)In this paper,the background of wind load characteristics and resistant performance of vehicle radar is introduced briefly,and the main research methods and development status are summarized.From those works,the main research work is carried out in the paper.(2)The basic characteristics and the related concepts of wind and the calculation method of equivalent static wind load are described in detail.The calculation process and the research significance of the six component wind load coefficients are mainly introduced in this paper,and lays a theoretical foundation for the analysis of wind load characteristics and resistance performance about the radar structure.(3)The six components of the scale model of the antenna and the overall rigidity of the radar are measured in the uniform flow field by the wind tunnel test.The wind load coefficient is calculated by the correlation theory,and then the wind load characteristics of the radar structure are analyzed.(4)According to the results of the wind tunnel test and wind load characteristic analysis,the overturning ability of the actual vehicle radar is checked,and the critical wind speed under different landform types is obtained.The static finite element analysis of the antenna structure is carried out by ANSYS,and the evaluation of the radar structure to maintain the normal working condition of the wind resistance is obtained by investigating the stress and deformation of the radar structure.In the end,the whole work is summarized,and the main conclusions is expounded.And based on the contents of this paper to be improved,the subject of further research work is put forward.