Structural behaviour of stainless steel tubular columns

Duarte, Hungaro; Lima, Luciano Rodrigues Ornelas de; da, Pedro Cardoso; Vellasco, P.C.G. da S.; Silva, A.T. da

doi:10.1201/9781351210843-66

Cited by 5 publications

(2 citation statements)

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“…The steel construction industry frequently uses steel tubular elements to build high performance and architecturally appealing structures. Thanks to high multidirectional axial and bending inertia, they are an excellent choice to achieve high strength with minimum weight (Duarte et al 2017). In addition, steel tubular frames require less corrosion and fire protection than other frames types with similar mechanical properties (Kanyilmaz et al 2020).…”

Section: ))mentioning

confidence: 99%

Role of metal 3D printing to increase quality and resource-efficiency in the construction sector

Kanyilmaz

Demir

Chierici

et al. 2022

Additive Manufacturing

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Section: ))mentioning

confidence: 99%

Role of metal 3D printing to increase quality and resource-efficiency in the construction sector

Kanyilmaz

Demir

Chierici

et al. 2022

Additive Manufacturing

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“…offshore wind platforms, bridges, stadiums) because of their mechanical qualities and elegant forms. The hollow cross-sections of the tubular steel profiles present a high multidirectional axial and bending inertia, which makes them an excellent choice to achieve a high strength and stability with minimum weight (Duarte et al 2017). Furthermore, the steel tubular frames require less corrosion and fire protection materials than other frames types with similar mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Nature-inspired optimization of tubular joints for metal 3D printing

Kanyilmaz

Berto

Paoletti

et al. 2020

Struct Multidisc Optim

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Steel tubular frames are often used to build a variety of structures because of their optimal mechanical properties and attractive forms. However, their joint fabrication involves a vast quantity of cutting and welding works, which induces high labour costs, material waste, and environmental pollution. The construction industry dominates the global carbon footprint, and it needs more sustainable products. Nature’s structures are also often tubular, and their joints (e.g. the knees of a human body, the nodes of trees and plants) are intrinsically optimized to maximize stiffness, resistance, and robustness. The 3D metal printing technology can enable a nature-inspired optimization of steel tubular joints, saving material waste and decreasing fabrication costs as well as the carbon footprint of the sector, since it is free from the constraints of traditional manufacturing. In this study, we designed new tubular joint shapes using solid isotropic material with the penalization (SIMP) method. The objective of the optimization was to maximize the structural performance of the node. The optimized node that used to be achieved after a complex manufacturing process composed of numerous cutting and welding operations, can now be 3D printed and then connected to the rest of the joint leading to a shorter fabrication time. We quantified the joints’ structural performance with different grades of optimization using non-linear finite element analysis. Compared with the conventional joint shapes, the new geometries offered a higher stiffness, resistance, and robustness. We performed a powder bed fusion simulation to analyze the residual stresses after production, and estimated the cost of the new solutions.

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