Hencky bar-chain model for buckling analysis of non-uniform columns. (May 2016)

• Record Type: Journal Article
• Authors: Ruocco, E.; Zhang, H.; Wang, C.M.
• Is Part Of: Structures. Volume 6(2016)
• Page Start: 73
• Page End: 84
• Publication Date: 2016-05
• Subjects: Buckling -- Non-uniform column -- Hencky bar-chain -- Spring stiffness -- Finite difference -- Piecewise column; Structural engineering -- Periodicals; 624.1
• DOI: 10.1016/j.istruc.2016.02.003
• Languages: English
• ISSNs: 2352-0124

Abstract

Abstract: The Hencky bar-chain model is developed for the buckling analysis of non-uniform columns. While the end rotational spring stiffnesses of the Hencky bar-chain are uniquely calibrated by the finite difference column model, the internal rotational spring stiffnesses may be defined in various ways for non-uniform columns. This paper studies three different ways in specifying the internal rotational spring stiffnesses and examine their effects on the buckling loads for various shapes of non-uniform columns. The developed Hencky bar-chain model facilitates buckling analysis and optimization of non-uniform columns as well as providing a physical interpretation to the numerical finite difference method.