摘要
对风载荷作用下的雷达罩进行有限元数值模拟分析,从而确定拉压应力范围,并给出罩体基圆位置的合力与力矩值.同时对雷达罩也作了屈曲分析,并给出风载荷下的稳定系数.结果表明受风载荷的雷达罩的最大应力发生在截球底座的边界上.有限元方法对雷达罩进行的稳定分析中考虑了基圆位处约束,计算得到的实际屈曲值比理想条件下的解析解更为准确.
The ground radome under wind load was emphatically studied with finite element numerical simulation. The range of tension and compression stress was determined. The resultant force and resultant moment were given as well. The buckling analysis was carried out, and the stability factor was calculated with theoretic formula and finite element method. The results showed that the maximum stress was located in the ground circle of the radome. The stability factor using finite element method was more accurate than using theoretic formula.
出处
《复旦学报（自然科学版）》
CAS
CSCD
北大核心
2006年第4期538-541,共4页
Journal of Fudan University：Natural Science
基金
上海市教委"曙光计划"产学研攻关项目(005211083)
关键词
雷达罩
风载荷
有限元法
屈曲分析
radome
wind load
finite element method
bucking analysis
