Hencky Bar-Chain model for buckling analysis of non-symmetric portal frames. (1st March 2019)

• Record Type: Journal Article
• Authors: Pan, W.H.; Wang, C.M.; Zhang, H.
• Is Part Of: Engineering structures. Volume 182(2019)
• Page Start: 391
• Page End: 402
• Publication Date: 2019-03-01
• Subjects: Hencky bar-chain model (HBM) -- Buckling -- Frames -- Discrete model -- Exact solution -- Euler–Bernoulli beam theory (EBT); Structural engineering -- Periodicals; Structural analysis (Engineering) -- Periodicals; Construction, Technique de la -- Périodiques; Génie parasismique -- Périodiques; Pression du vent -- Périodiques; Earthquake engineering; Structural engineering; Wind-pressure; Periodicals; 624.105
• DOI: 10.1016/j.engstruct.2018.12.078
• Languages: English
• ISSNs: 0141-0296

Abstract

Highlights: Applied the Hencky bar-chain model (HBM) for frame buckling analysis considering different configurations. Used easy-to-code stiffness matrices with patterns to simplify the expression of HBM formulations. Demonstrated the advantage of localized model modification of HBM in considering a local damage/stiffening. Abstract: This paper presents the development of the Hencky bar-chain model (HBM) for the buckling analysis of non-symmetric portal frames under vertical compressive axial loads on the columns. Generic stiffness and geometric matrices are derived for the frame buckling analysis. Based on these matrices, a simple computer code is developed to determine the buckling loads. Illustrative frame buckling problems are solved to demonstrate the ease and simplicity of the HBM for analysis of different and complex design conditions imposed on the frames. The advantages of consistent formulation, localized model modifications, and convenience in obtaining the buckling modes are further noted for the HBM.