Abstract
Elastic local buckling strength of rectangular hollow section members is theoretically derived considering coupling of adjacent plate elements and shear bending interaction. The effects of boundary conditions, loading conditions, and member shapes on the buckling strength are investigated. Finally, approximate formulas for calculating the buckling strength depending on bending moment gradient, cross section ratio, and aspect ratio are presented.
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This work was supported by JSPS KAKENHI Grant Number JP20K14865.
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Appendix. Finite Element Method
Appendix. Finite Element Method
This appendix provides an overview of the buckling eigenvalue analysis by finite element method. In this study, the program Abaqus is used for the finite element analysis. Fig. A1 shows the analytical model. The model consists of 4-node shell elements. The long side of the plate elements is divided into 16 parts in the transverse direction. The short side of the plate elements is divided into from 4 to 16 parts so that each shell element approaches square. In the longitudinal direction, the plate elements are divided by 16 times the aspect ratio of web plate element. The boundary conditions and loading conditions of the analysis model are as shown in the figure.
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Inoue, K., Sato, K. (2024). Evaluation of Elastic Local Buckling Strength of Rectangular Hollow Section Members Considering Shear Bending Interaction. In: Benaissa, B., Capozucca, R., Khatir, S., Milani, G. (eds) Proceedings of the International Conference of Steel and Composite for Engineering Structures. ICSCES 2023. Lecture Notes in Civil Engineering, vol 486. Springer, Cham. https://doi.org/10.1007/978-3-031-57224-1_5
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