I am working to simulate very thin aluminum layer (t = 0.3 mm) with central crack subjected to multi axial fatigue by abaqus software according to the following procedure:
1. create two parts (aluminum layer and crack)
2. properties (Elastic + Damage initiation and damage evolution)
3. assemble the above two parts.
4. specify steps and the required outputs. (with low cyclic fatigue)
5. interaction (Special - crack - create - XFEM crack - specify crack domain - crack location)
6.loading and boundary conditions
7. meshing (assign mesh control (Hex-structured) and element type C3D8
but at job implement appear this error "the following XFEM crack are failing to correctly generate. the error condition are listed with the crack names: Crack-1 - Failed to locate crack tip" as shown in the figure below
when I try to change the aluminum layer thickness to 0.6 mm this error disappears and the job is carried out well and completely.
Dear Mustafa Kadhim ,
did you define an interaction property and assign it to your XFEM crack after defining the crack location?
Dear Eleftherios Tsivolas
Yes... I defined the interaction property and assign it to XFEM crack, but I think the problem in thickness (i.e. when I used thickness 0.6 mm for aluminum plate the job was implemented well, while when using thickness 0.3 mm the above mentioned error appear)
It would have been better if you share the file for further analysis. One of the mechanisms of solving the problem is through eliminating the dominating mesh. Considering XFEM crack, it is better to use uniform quad element. With triangular elements the crack will not be generated with quad dominated mechanism. Have considered that in your modeling?
- Badges
- Science topic