A Comparison of Combined and Tubular Cast Steel Joint on Mechanical Properties

Abstract:

In order to provide scientific basis for design and application of cast steel joint, this paper researches on mechanical properties of tubular-plate combined cast steel joint and tubular cast steel joint, which work in International Expo Center in the most unfavorable load condition. Finite Element Method (FEM) is employed to analysis the mechanical properties of the complex cast steel joint and an optimize solution is given. FEM based on large deformation theory and material nonlinearity obtained ultimate load and failure mode of the joints. The results show that, force transmission path of combined cast steel joint is complex for its cross-section shape of branch changes much; stress concentration is very obvious on the branch. In contrast, the force transmission path of tubular cast steel joint is clear and concise; the phenomenon of stress concentration alleviated effectively, the efficiency of material improved greatly; in the same amount of material, the ultimate bearing capacity of tubular cast steel joint increased by 9.5%. The joint design should follow the principle of simple and practical in premise of mechanical requirements.

• Periodical: Applied Mechanics and Materials (Volumes 174-177)
• Pages: 1294-1298
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.174-177.1294
• Online since: May 2012
• Authors: Ming Fang Li, Yuan Qi Cai
• Keywords: Combined cast steel joint, Geometric Nonlinearity, Joint Design, Large Strain, Material Nonlinear, Tubular Cast Steel Joint, Ultimate Bearing Capacity

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