薄壁箱型结构仿真与实验稳定性分析  

Stability Analysis of Thin-walled Box by Simulation and Test

作　　者：陈玉振[1] 陈亚峰[1] 

机构地区：[1]南京电子技术研究所,江苏南京210039

出　　处：《电子机械工程》2013年第5期61-64,共4页Electro-Mechanical Engineering

摘　　要：文中以单节薄壁箱型结构为研究对象,针对不加筋和加筋2种结构形式,利用ANSYS特征值屈曲分析和实物试验对其进行稳定性研究,得到了加筋前后薄壁结构的极限失稳载荷和屈曲形态。仿真与试验结果都表明,加强筋的设置显著提高了薄壁箱型结构的极限失稳载荷,是一种非常有效的提高薄壁结构稳定性的方法。特征值屈曲分析得到的屈曲形态与试验比较一致,可方便快速地为加强筋的形状和位置优化提供理论依据。In this paper the instability ultimate load and the first order modal are obtained against box struc- tures with reinforcement and non-reinforcement by ANSYS eigenvalue buckling analysis and experiment, with the single thin-walled box structure as the research object. Both the theoretical calculation and experimental results show that with reinforcement the instability ultimate load has been evidently improved and thus it is an effective method of improving the stability of box structures. The buckling form obtained by eigenvalue buck- ling analysis is the same as the experiment results, which can provide theoretical support for the design of rein- forcement.

关 键 词：屈曲分析 稳定性 有限元 薄壁箱型结构 

分 类 号：TN876.7[电子电信—信息与通信工程]