Helpful Hints and Tips: Elliptical Crack Automeshing Guidelines
This document contains practical guidelines for the automeshing of elliptical or semi-elliptical cracks in StressCheck, balancing best practices with mesh density and solve time. These guidelines are most applicable when the crack front curve object is of type ellipse (i.e. “ELL”). For a curve object type of spline (i.e. “BSP”) or other, a similar process can be followed to generate reasonable automeshes for the computation of fracture mechanics parameters.
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“A screening of existent commercial and non-commercial tools was carried out in respect to their fracture mechanics capabilities, their design abilities, implementation as well as their complexity. Although, there are many software possibilities, only those within the reach of the author were evaluated. This resulted in the selection of the commercial tool StressCheck®. The assessment of crack propagation on compact tension and two stringer specimens governed by the Paris and Forman regimes was satisfactory compared with experimental results using the material data from simple standard specimens.”
Lloren Llopart Prieto (EADS)Doctoral Thesis, "Modelling and analysis of crack turning on aeronautical structures"