RADIOSS JOB FAILED and no Engine Output File generated

Jose Luis Barrera_21161
Jose Luis Barrera_21161 Altair Community Member
edited April 25 in Community Q&A

Hi,

I'm simulating a bird strike on an aircraft landing door but due to the complexity of the model I have simplified it in order to check the material/properties configuration.

But once I run it, no ERRORS are reported in the STARTER out file and no Engine out file is generated.

The RADIOSS version is the 2019.

Attached the Starter and Engine input files

Thanks for any support

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Answers

  • Jose Luis Barrera_21161
    Jose Luis Barrera_21161 Altair Community Member
    edited April 10

    I forgot, an apology

    The job failes immediately but no trace about the reason

     

    Thks

  • Polyvios Romanidis
    Polyvios Romanidis New Altair Community Member
    edited April 25

    Hello Jose,

    The behavior you describe is connected with a bug problem with the solver.  It has been corrected now and will be available for next version of the program.

    For now, I only can suggest you a workaround.  The problem lays in the use of /PROP/TYPE51 with Ishell = 24 formulation.

    You can set a different formulation for Ishell parameter in all /PROP/TYPE51 you have set.  Now you are using Ishell = 24, which causes the problem.  The best workarounds are:

    1. To set Ishell = 4 for all /PROP/TYPE51 and run your simulation
    2. To set Ishell = 12 for all /PROP/TYPE51 and run your simulation

    Ishell = 4 is a reduced integration element formulation based on Belytshko & Tsay.  This formulation will bring a fast solution, but sometimes hourglass phenomena might exist (but not necessarily).

    Ishell = 12 is a full integration element formulation.  This formulation will not cause hourglass for sure, but will slow down the solution speed and will need more time to run. (expected 2 times more compared with Ishell = 4)

    I would recommend you to try Ishell = 4 and just check for hourglass phenomena.  If you face hourglass effects then turn to Ishell = 12 and try to solve again.

    Polyvios

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