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Initial comparisons between experiment and theory of the strain fields in a cracked copper plate

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Abstract

Comparison is made between experimental and theoretical analyses of strain in a cracked copper plate. Correlation between the two is satisfactory at flow and high loading, but shows inaccuracies at intermediate loads. The cause appears to be uncertainty in the stress-strain curve in the region of initial yield

Résumé

On compare les analyses expérimentale et théorique des déformations existantes dans une tôle de cuivre fissurée. S'il existe une corrélation satisfaisante entre ces deux formes d'analyse pour les contraintes faibles et les contraintes faibles et les contraintes élevées, il se manifeste par contre une discordance daps la gamme des contraintes intermédiaires. La cause semble en être une incertitude sur la courbe contrainte-déformation, dans la zone des premières déformations plastiques.

Zusammenfassung

Es wurde ein Vergleich zwischen den experimentellen und theoretischen Anspannungsanalysen in einer rißigen Kupferplatte hergestellt. Die Korrelation zwischen den beiden Analysen ist zufriedenstellend bei niedriger und hoher Belastung, zeigt abet Ungenauigkeiten bei mittlerer Belastung. Der Grund dafür scheint Unberechenbarkeit in der Druckanspannungskurve im Bereich des ursprünglichen Gewinnes zu sein.

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References

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Authors and Affiliations

  1. Department of Mechanical Engineering, Carnegie Institute of Technology, Carnegie-Mellon University, Pittsburgh, Pa.

    J. L. Swedlow

Authors
  1. J. L. Swedlow
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Additional information

This work was supported by the National Aeronautics and Space Administration Research Grant NGR-39-002-023.

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Swedlow, J.L. Initial comparisons between experiment and theory of the strain fields in a cracked copper plate. Int J Fract 5, 25–31 (1969). https://doi.org/10.1007/BF00189936

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  • DOI: https://doi.org/10.1007/BF00189936

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