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On the role of triaxiality in mode-I resistance curves

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Abstract

Insight into the role of triaxiality in mode-I, plane strain resistance curves of a representative ductile metal has been gained. Growth of a macroscopic crack is simulated as per modified boundary layer formulation for a range of constraint parameter with the fracture process represented by a triaxiality dependent cohesive model. In contrast to the predictions by a fixed cohesive law, the study shows that by including the effect of triaxiality on the work of separation, the stick-slip nature or the non-uniformity in the rate of the crack growth and its manifestations on the plastic wake and fracture surface can be predicted that are closer to trends observed in experimental literature.

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Acknowledgments

The authors gratefully acknowledge the financial support provided by Aeronautics Research and Development Board (ARDB), India. (Grant no: DARO/08/1051582/M/I) to carry out the research work.

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Authors and Affiliations

  1. Department of Applied Mechanics, IIT Madras, Chennai, 600 036, India

    Nishant Kanhurkar, Faizan Md. Rashid & Anuradha Banerjee

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  1. Nishant Kanhurkar
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  2. Faizan Md. Rashid
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  3. Anuradha Banerjee
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Correspondence to Anuradha Banerjee.

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Kanhurkar, N., Rashid, F.M. & Banerjee, A. On the role of triaxiality in mode-I resistance curves. Int J Fract 188, 59–70 (2014). https://doi.org/10.1007/s10704-014-9946-4

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  • DOI: https://doi.org/10.1007/s10704-014-9946-4

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