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Fracture and surface flaws in smooth and threaded round bars

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Abstract

Stress intensity solutions for a surface flaw in a round bar and a threaded round bar are presented. Loading cases include tension and pure bending. A finite element method, utilizing displacements in standard quadratic isoparametric elements adjacent to the crack edge, is used. The results, presented in dimensionless format, will be useful for determining fatigue life in various bolt and pin applications.

Résumé

On présente les solutions d'intensité de contraintes dans le cas d'un défaut de surface dans un barreau rond présentant ou non un filet. Les modes de sollicitation sont la traction et la flexion pure. On utilise une méthode par éléments finis, qui recourt à des déplacements dans des éléments standard isoparamétriques à quatre cotés, adjacents aux bords de la fissure.

Les résultats, sous une forme sans dimension, seront utiles à la détermination de l'endurance en fatigue dans diverse applications de fixation par boulons et par tenons.

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References

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Authors and Affiliations

  1. Teledyne Brown Engineering, 35807, Huntsville, AL, USA

    K. J. Nord

  2. Department of Mechanical Engineering, University of Alabama in Huntsville, 35899, Huntsville, AL, USA

    T. J. Chung

Authors
  1. K. J. Nord
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  2. T. J. Chung
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Nord, K.J., Chung, T.J. Fracture and surface flaws in smooth and threaded round bars. Int J Fract 30, 47–55 (1986). https://doi.org/10.1007/BF00034578

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  • DOI: https://doi.org/10.1007/BF00034578

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