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Assumptions of Griffith's fracture theory

  1. May 21, 2013 #1
    Any experts on Griffith's fracture theory?

    I am studying the subject and I am having hard time finding out if the theory is valid for all possible initial crack lengths. I have heard from pretty reliable source that we must assume small crack length compared to the macroscopic length of the system. But I haven't found this restriction from the material in the web.

    I am building a DEM simulation model and I would like to test it against the Griffith's fracture theory but I am not sure if the simulation should produce similar values for critical stress when the length of the initial crack is not small compared to the length scale of the system.
     
  2. jcsd
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