• 论文 •

### 整体次加筋壁板屈曲载荷近似计算方法

1. 北京航空航天大学 航空科学与工程学院, 北京 100191
• 收稿日期:2014-04-30 出版日期:2015-03-20 发布日期:2015-04-02
• 通讯作者: 徐元铭(1965-),男,江苏武进人,教授,xuymg@sina.com,主要研究方向为飞行器结构设计、结构优化、神经网络专家系统. E-mail:xuymg@sina.com

### Approximate calculation method of buckling load on integral sub-stiffened panel

XU Yuanming, LI Songze

1. School of Aeronautics Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
• Received:2014-04-30 Online:2015-03-20 Published:2015-04-02

Abstract: To calculate the integral sub-stiffened panel buckling load in the preliminary design stage quickly, a simplifying approximate calculation method based on some reasonable assumptions was proposed. The perfect rectangular sub-stiffened panel simply supported on four sizes was used as investigation object. This structure has 3 instability forms, and the corresponding buckling loads were obtained by using the traditional stiffened plate theory. The minimum buckling load of the 3 instability forms was regarded as the approximate buckling load of the integral sub-stiffened panel. The buckling linear perturbation step method of ABAQUS was used to calculate the two sets of finite element (FE) models respectively: one set was used to validate the accuracies of the theoretical formulas for failure modes, and the other set was integral sub-stiffened panel finite element models which were used to verify the applicability of proposed calculation method of sub-stiffened panel buckling load. Only two load cases were considered in the research above: the longitudinal compression load and the combination of compression and shear load. The results indicate that the theoretical approximate calculation method can calculate the buckling load of sub-stiffened panel, which count for engineering application to some extent.