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The few lines you posted seem to be OK. But what about BC, resolution.? Sorry, here are both the.hdf and the.comm files. Since I'm analyzing one quarter of the component, I fixed the symmetry conditions at the left vertical (DX=0) and bottom horizontal (DY=0) edges; the load is applied as a pressure onto the top horizontal edge. I build the export file using 'add study case' into the Aster environment of Salome-Meca and I'm able to solve the problem, but the deformed shape is not correct (I can't see the vertical displacement of the flanks of the crack).

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If I'm forgetting some information, please do ask. Mattia EDIT: I have checked again the DEFI_FOND_FISS command and I have tried to slightly modify both the model and the command file. Last edited by mattia (2011-09-29 13:43:08). Hello Mattia, you have well defined your crack, but you neither included it into your model nor into your solution (meca-statique). Moreover MECA_STATIQUE is used only in linear statics, which isn't the case in your nonlinear study due to the crack. Instead you should use STAT_NON_LINE (U.51.03) for the solution, there you can use the keyword FISSURE, which adds the crack to your computation. You'll find also a lot af test-cases on this topic (SSLV154 for example) in your astest directory which should help you understanding the modeling, solution and postprocessing philosophy of code-aster.

Regards, Richard. Hello Mattia, you have well defined your crack, but you neither included it into your model nor into your solution (meca-statique). Download software alat musik pc. Moreover MECA_STATIQUE is used only in linear statics, which isn't the case in your nonlinear study due to the crack.

Instead you should use STAT_NON_LINE (U.51.03) for the solution, there you can use the keyword FISSURE, which adds the crack to your computation. You'll find also a lot af test-cases on this topic (SSLV154 for example) in your astest directory which should help you understanding the modeling, solution and postprocessing philosophy of code-aster. Regards, Richard Hi Richard, thank you very much for your reply. I have a FEM background with Ansys, in which one can implement a static analysis of cracks with a linear elastic model. Moreover, even if I had read most of the test cases documentation regarding cracks, I hadn't thought of looking at the code in the astest directory. I'll post here every news.

Thanks again, Mattia. The problem comes from your mesh. There is no crack in your mesh. The 2 crack lines must be different segments, i.e, have different nodes (except at crack tip). For instance in your mesh, node n°8, 11 and 10 must be 'double nodes' -> 6 nodes One part of the nodes belonging to the superior line and on part of the nodes belonging to the inferior line. Samuel Hi Samuel, I guessed that there could be a problem with the mesh, but I don't know how to solve it, since I would need some information coming from the geometry, and as far as I know the case studies don't allow only to work in this environment (for example the SSLV155 you did - by the way, well done!).