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Ansys Learning Forum › Forums › Discuss Simulation › General Mechanical › Meshing around a semi elliptical crack; warning: during crack meshing error › Reply To: Meshing around a semi elliptical crack; warning: during crack meshing error

November 17, 2023 at 1:59 pm
SHELL
Ansys Employee

Hello Elena,

Generally, please note that among the Fracture Meshing tools the Semi-elliptical Crack feature has more limitations than the Arbitrary Crack feature. E.g. the Semi-elliptical Crack feature can only be applied to one surface/face and only remeshes there. That will make it difficult to achieve a crack mesh close to the border of a face.
https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v232/en/wb_sim/ds_fracture_limits.html

The Arbitrary Crack feature on the other hand can cross faces as long as they belong to the same body. That might help you in achieving an appropriate mesh more often.

Note that the Fracture Meshing tools are intended for cracks within a bulk material where SIF results are actually valid (they are not in material interfaces). For interface cracking/debonding applications, you could use CZM or VCCT (https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v232/en/wb_sim/ds_geo_delam_debond.html).

I hope this information will help you.

Regards,

Sascha

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