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Investigations of fracture instability in crack growth for several metals—Part II: An energy approach for fracture instability analysis of crack growth

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Abstract

An energy approach is presented to predict fracture instability using elastic-plastic internal energy in structures, the physical behaviour of crack growth, dynamic effects in the process of unstable crack growth and intense strain region near the crack tip are considered. The practical forms of the approach have predicted correctly fracture instability of tests with three-point bending specimens (3PB specimen) and compact specimens (CT specimen) under highly stiff supporting system, but ‘tearing modulus criterion’ gave incorrect estimations which were shown in part I [1].

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References

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Authors and Affiliations

  1. Department of Applied Mechanics, Nanjing University of Science and Technology, 210014, Nanjing, People's Republic of China

    X. C. Yin

  2. Department of Engineering Mechanics, Chongqing University, Chongqing, People's Republic of China

    T. G. Chen

Authors
  1. X. C. Yin
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  2. T. G. Chen
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Yin, X.C., Chen, T.G. Investigations of fracture instability in crack growth for several metals—Part II: An energy approach for fracture instability analysis of crack growth. Int J Fract 68, 363–374 (1994). https://doi.org/10.1007/BF00033962

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  • DOI: https://doi.org/10.1007/BF00033962

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