March 21, 2022 at 1:57 pmPaul_LoepsSubscriber
as written in the header, I want to use a custom formulation to determine the equivalent SIF and the crack-growth direction for a 2D mixed mode. Is it possible to change the formulations which are used by ANSYS?
Thanks in advance.March 22, 2022 at 2:35 pmDaniel ShawAnsys EmployeeNo. MAPDL uses the integration integral method to calculate the SIFs. You cannot specify a different method. See Section 184.108.40.206 in the MAPDL Fracture Analysis Guide.
You can create a user defined crack-growth law. See Section 220.127.116.11 in the MAPDL Fracture Analysis Guide.
March 22, 2022 at 3:26 pmPaul_LoepsSubscriberThanks for the fast answer Daniel.
I don't want to change the method each SIF is calculated but the method how ANSYS calculates the averaged SIF. As much as I know, in the current version ANSYS calculates the equivalent SIF with the following equation:
An determines the angle of the crack growth by:
I want to change these two to the criterion formulated by Richard:
I don't know whether it is possible to change it in an easy way or find the formulation in the related file.
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