Session Dates
09 Nov 2016
Abstract
This paper presents a method for distortional buckling analysis of thin-walled members without assuming longitudinal shape of buckling modes. In this method, the pure distortional elastic buckling loads and deformation modes are achieved by performing a linear buckling analysis of a specially constrained finite element model of the thin-walled member in ANSYS. The constraints on each cross-section are applied independently and can be divided into two parts. The first part, by which distortional buckling can be distinguished from local buckling, depicts the transvers deformation of a cross-section, while the second part originated from longitudinal displacement patterns of distortional modes is used to distinguish this type of buckling from global buckling. Transverse membrane extensions are permitted in the proposed distortional buckling mode. A numerical example is given to demonstrate the method.
Department(s)
Civil, Architectural and Environmental Engineering
Research Center/Lab(s)
Wei-Wen Yu Center for Cold-Formed Steel Structures
Meeting Name
International Specialty Conference on Cold-Formed Steel Structures 2016
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2016 Missouri University of Science and Technology, All rights reserved.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Jin, Sheng; Jiana, Xiao; Chenga, Rui; Niea, Shidong; and Chenga, Mingyue, "A Finite Element Method for Distortional Buckling Analysis of Thin-Walled Members" (2016). CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018). 2.
https://scholarsmine.mst.edu/isccss/23iccfss/session1/2
A Finite Element Method for Distortional Buckling Analysis of Thin-Walled Members
This paper presents a method for distortional buckling analysis of thin-walled members without assuming longitudinal shape of buckling modes. In this method, the pure distortional elastic buckling loads and deformation modes are achieved by performing a linear buckling analysis of a specially constrained finite element model of the thin-walled member in ANSYS. The constraints on each cross-section are applied independently and can be divided into two parts. The first part, by which distortional buckling can be distinguished from local buckling, depicts the transvers deformation of a cross-section, while the second part originated from longitudinal displacement patterns of distortional modes is used to distinguish this type of buckling from global buckling. Transverse membrane extensions are permitted in the proposed distortional buckling mode. A numerical example is given to demonstrate the method.
