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Identification of buckling modes in generalized spline finite strip analysis of cold-formed steel members
AbstractIn this paper, a mode identification technique in the context of spline finite strip method (SFSM) is presented to compute the contribution of primary (global, distortional and local) and secondary (shear/transverse extension) buckling modes. The base vectors corresponding to individual buckling modes are developed based on the principles of generalized beam theory. The buckling mode shape in SFSM is approximated as a linear combination of these orthonormal base vectors to evaluate the participation of individual buckling mode. The proposed mode identification technique is able to successfully quantify the participation of different buckling modes and the mode participation is comparable with mode identification using finite strip method (FSM) and generalized beam theory (GBT). Illustrative examples are presented to calculate the participation of individual modes in cold-formed steel sections under different loading and boundary conditions. Also the specific application of mode identification in SFSM is demonstrated.
HighlightsA mode identification technique has been proposed in the context of spline finite strip method.The base vectors corresponding to different buckling modes are established based on GBT principles.Mode participation of cold-formed steel members with different loading and support condition are evaluated.
Identification of buckling modes in generalized spline finite strip analysis of cold-formed steel members
AbstractIn this paper, a mode identification technique in the context of spline finite strip method (SFSM) is presented to compute the contribution of primary (global, distortional and local) and secondary (shear/transverse extension) buckling modes. The base vectors corresponding to individual buckling modes are developed based on the principles of generalized beam theory. The buckling mode shape in SFSM is approximated as a linear combination of these orthonormal base vectors to evaluate the participation of individual buckling mode. The proposed mode identification technique is able to successfully quantify the participation of different buckling modes and the mode participation is comparable with mode identification using finite strip method (FSM) and generalized beam theory (GBT). Illustrative examples are presented to calculate the participation of individual modes in cold-formed steel sections under different loading and boundary conditions. Also the specific application of mode identification in SFSM is demonstrated.
HighlightsA mode identification technique has been proposed in the context of spline finite strip method.The base vectors corresponding to different buckling modes are established based on GBT principles.Mode participation of cold-formed steel members with different loading and support condition are evaluated.
Identification of buckling modes in generalized spline finite strip analysis of cold-formed steel members
Ajeesh, S.S. (author) / Arul Jayachandran, S. (author)
Thin-Walled Structures ; 119 ; 593-602
2017-07-10
10 pages
Article (Journal)
Electronic Resource
English
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