Revista UIS Ingenierías

Vol. 16 No. 2 (2017): UIS Engineering Journal
Articles

Strength of stainless steel slender beams under concentrated loads by finite elements

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  • A Asdrúbal,
  • Carlos Graciano,
  • Octavio Andrés González-Estrada
A Asdrúbal
Albatros Ingeniería
Carlos Graciano
Universidad Nacional de Colombia
Bio
Octavio Andrés González-Estrada
Universidad Industrial de Santander
Bio
DOI: https://doi.org/10.18273/revuin.v16n2-2017006

Published 2017-06-10

Keywords

  • Slender beams,
  • concentrated load,
  • stainless steel,
  • ultimate strength

How to Cite

Asdrúbal, A., Graciano, C., & González-Estrada, O. A. (2017). Strength of stainless steel slender beams under concentrated loads by finite elements. Revista UIS Ingenierías, 16(2), 61–70. https://doi.org/10.18273/revuin.v16n2-2017006
Copyright Notice

Abstract

The use of stainless steel in structures has gained momentum in recent years due to its good cost-benefit over time, protection to corrosion, fire resistance and creep resistance greater than that provided by structural steel commonly used in industry. Despite this increase in use there is still some degree of uncertainty and lack of knowledge regarding their application, as steel design codes focus on structural steel. Therefore, the present work reports the results of the numerical study of thin stainless steel beams used in bridges, subjected to concentrated loads, in order to increase the state of the art of this particular application. A finite element model is constructed taking into account the non-linear behavior of the material and the initial imperfections (deflections in the web and residual stresses). The model is validated using experimental data found in the literature, using commercial software MSC.Marc. Then, a parametric study of the influence of the thickness ratio (tf / tw) and load area – length of beam ratio (ss / a) on the ultimate strength is performed. Finally, it is obtained that the use of the stainless steel presents advantages in its post-critical behavior with respect to geometrically similar panels of structural steel, allowing the structural optimization of slender beams for bridges.

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