FE software ANSYS provides SIFs calculation in fracture mechanics for 3 modes by CINT command for isotropic elastic material for example. Does command CINT calculate SIFs for orthotropic material or anisotropic material correctly or not? Does calculation method with CINT command in ANSYS take into account anisotropy or orthotropy of material?
Dear Artem,
You can compare ANSYS solutions with exact SIFs values for orthotropic material using, for example, the paper by K. P. Herrmann, V. V. Loboda. On interface crack models with contact zones situated in an anisotropic bimaterial // Archive of Applied Mechanics.– 69, 1999. – P. 317-335.
You may look at my research items in researchgate for simple but exact computation of parameters of fracture mechanics including SIF , energy release rate and crack compliance.
Dear Artem,
There are simple and right ways to estimate the parameters of fracture, I recommend to estimate first the CTOD from results and then use it to obtain the SIF and compare the results with the literature. I used the CTOD to obtain the J-integral in my last publication in computational materials science, you can use it to estimate the SIF.
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