An Engineering Correction Method for Buckling Load of Dense Stiffened Panels

Abstract:

It is convenient for designers to get the buckling loads of sparse stiffened panels quickly by using engineering calculation method to analyze the stability of composite stiffened panels, but it is still unable to meet the accuracy requirements of analysis of dense stiffened panels. The buckling loads of stiffened panels are closely related to the buckling modes. Based on capturing and analyzing the Compressive Buckling waveforms of T-shaped densely stiffened panels, this paper presents a formula for calculating the buckling loads according to the geometric coefficients. The results are very similar to those of finite element simulation, and can be used to calculate the buckling loads of sparse and dense stiffened panels with different stiffeners.

• Periodical: Materials Science Forum (Volume 1003)
• Pages: 92-97
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1003.92
• Online since: July 2020
• Authors: Wen Hao Liu, Ruixiang Bai*, Kang Su, Jian Chao Zou, Da Liu, Zhen Kun Lei
• Keywords: Buckling Load, Compression Test, Dense Stiffened Panel, Engineering Calculation Correction, Finite Element Method

References

[1] YANG Naibing, ZHANG Yining. Design of composite aircraft structure[M]. Beijing: Aviation Industry Press, 2004:1-10(in Chinese).

[2] CUI Degang. Handbook of structure stability[M]. Beijing: Aviation Industry Press, 2006(in Chinese).

[3] Cheng Wenyuan, Cui Degang. Loading capability of composite multi-spar structures［J］. Acta Materiae Compositae Sinica, 2006, 23(4): 119-123(in Chinese).

[4] WANG Caiying, BAI Ruixaing, LEI Zhenkun. Experimental study on compressive buckling behavior of I-type stiffened composite wall[J]. Journal of Experimental Mechanics, 2018, 33(05): 725-733(in Chinese).

[5] LIU Congyu, XU Xiwu, CHEN Geng. Numerical analysis of bucking and bearing capacity of debonded composite stiffened panel after buckling[J]. Acta Materiae Compositae Sinica, 2010, 27(6): 158-166(in Chinese).

[6] Pietropaoli E, Riccio A. Finite element analysis of the stability (buckling and post-buckling) of composite laminated structures: well established procedures and challenges[J]. Applied Composite Materials, 2012, 19(1): 79-96.

DOI: 10.1007/s10443-010-9182-7

[7] Chen N Z, Guedes Soares C. Reliability assessment of post-buckling compressive strength of laminated composite panels and stiffened panels under axial compression[J]. Solids and Structure, 2007, 44(22/23): 7167-7182.

DOI: 10.1016/j.ijsolstr.2007.04.002

[8] Zhao W, Xie Z H, Wang X N, Li X, Hao J. Buckling behavior of stiffened composite panels with variable thickness skin under compression[J]. Mechanics of Advanced Materials and Structures, 2019, 26(3): 215-223.

DOI: 10.1080/15376494.2018.1495795