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.
出处
《电子机械工程》
2013年第5期61-64,共4页
Electro-Mechanical Engineering
关键词
屈曲分析
稳定性
有限元
薄壁箱型结构
eigenvalue buckling analysis
stability
finite element
thin-walled box
