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From Shakedown Theory to Fatigue Fracture of Ductile Materials

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Contemporary Research in Engineering Science

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Abstract

This work deals with shakedown theorems of ductile materials and their application in fatigue fracture. Based on experimental observation, a fatigue crack is considered as a sharp notch with root radius being a material constant at threshold stress level. The reason for no crack propagation is assumed due to shakedown of the cracked body. Thus, a transition from shakedown to fatigue fracture is achieved. A simple, but reasonabl criterion for crack threshold has been worked out by using shakedown theorem. It is found that the fatigue threshold of a cracked body is proportional to the initial yield stress of the material multiplied by the square root of the effective crack tip radius. To verify the correctness of the analysis, about 50 sets of fatigue experimental data for ductile materials are collected from litereture, these data are then compared with the predicted results. Very good agreement between experiments and analyses has been achieved.

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Author information

Authors and Affiliations

  1. Institut für Baumechanik und Numerische Mechanik, Universität Hannover, Appelstr. 9A, D-30167, Hannover, Germany

    Y. J. Huang & E. Stein

Authors
  1. Y. J. Huang
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  2. E. Stein
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Editor information

Editors and Affiliations

  1. Dept. of Engineering Science and Mechanics, Virginia Polytechnic Institute and State University, 24061-0219, Blacksburg, VA, USA

    Romesh C. Batra

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© 1995 Springer-Verlag Berlin Heidelberg

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Huang, Y.J., Stein, E. (1995). From Shakedown Theory to Fatigue Fracture of Ductile Materials. In: Batra, R.C. (eds) Contemporary Research in Engineering Science. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-80001-6_10

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  • DOI: https://doi.org/10.1007/978-3-642-80001-6_10

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-80003-0

  • Online ISBN: 978-3-642-80001-6

  • eBook Packages: Springer Book Archive

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