error analysis

[EnricoScarin]

Good morning to all, my name is enrico and I am working with the software msc patran 2012 and msc dytran 2012 for my thesis. It is a simulation of an explosion and interaction with a frp barrier, therefore a problem of interaction between eulerian and lagrangiani materials. I'm trying to make a simple case of interaction with a framed beam. the problem, never found before for other exercises I did, is that when I start the analysis patran does not create me dat and bdf files! I don't know where to bang my head because it doesn't report any mistakes. the only thing I managed to do is a screenshot of the moment the analysis starts. I put it in the annex. I hope in a solution. thanks to all in advance

 

[EnricoScarin]

after several attempts the problem remains. doing other analysis the problem is not there. The absurd thing is that it doesn't give me the dat and the bdf. I think the problem is "coupling" and the formation of fictitious surfaces. Now as now I would like to simulate the interaction of a shelf with a shock wave. the shelf has 200 el in x 20 in y and 1 in z because I want a problem plan of effort. therefore model the shelf and the environment (also this with only one element in z). when I have to select the mating surface the 2 "lateral" zones should not interact because I want the interaction only with the front and upper face of the shelf. I must therefore create fictitious surfaces to close the surface for coupling. (the manual says that mating sup.s must create a positive volume). done all that imposed the analysis, I turn but it freezes after very little and does not generate the impt files for dytran. I'm desperate enough!! doing the same problem in 3d instead everything works because I do not create the fictitious surfaces but I simply do for coupling all the faces of the beam.

Can someone explain to me how this imaginary "coupling" works?

I ask for help! !