Fatigue life assessment of welded joints in a crane boom using different structural stress approaches

  • Brahami Riad Laboratoire de Génie de la Construction et Architecture (LGCA), Faculté de Technologie, Université de Bejaia, 06000 Bejaia, Algeria Phone : +213 664429440
  • Hamri Okba Laboratoire de Génie Mécanique et Développement (LGMD), Ecole Nationale Polytechnique, 16200 Alger, Algeria
  • Sfarni Samir Laboratoire de Génie de la Construction et Architecture (LGCA), Faculté de Technologie, Université de Bejaia, 06000 Bejaia, Algeria Phone : +213 664429440
Keywords: Fatigue assessment, Welded joints, Structural stress approach, Finite element analysis, Fatigue strength

Abstract

This article presents a study of the fatigue strength of welded parts in a crane boom. First, a finite element analysis was carried out over the whole structure. Two critical welded zones were identified and a detailed analysis was carried on them, in the form of sub-models. Three different approaches for estimating the structural stress in welded zones, were presented and applied to each sub-model. Results were compared and discussed. The evaluation of fatigue resistance by the use of appropriate S-N curves for each method was also carried out and discussed. The use of these approaches on a complex industrial structure, and on tubular joints with hollow sections required to perform many adaptations and to solve several difficulties presented hereafter.

Published
2019-06-28
How to Cite
Riad, B., Okba, H., & Samir, S. (2019). Fatigue life assessment of welded joints in a crane boom using different structural stress approaches. Journal of Mechanical Engineering and Sciences, 13(2), 5048 - 5073. https://doi.org/10.15282/jmes.13.2.2019.20.0417
Section
Article