Assumptions of Griffith's fracture theory

[wonderer_85]

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.

 

[Valerie Park]

The best experts on the Griffith's fracture theory are likely to be those in the field of material science or fracture mechanics. Some universities may offer courses related to fracture mechanics, and the instructors in these courses should be able to provide you with the information you seek. Alternatively, you may be able to find references to published research in the area. The American Society for Testing and Materials (ASTM) may also be able to provide you with some useful information. Finally, there are a number of commercial vendors that specialize in providing fracture mechanics services and consulting. They may be able to provide you with information on the Griffith's fracture theory and its applications.