Angular velocity in Roll over Analysis.

User: "RAMGANESH"
RAMGANESH
Altair Community Member
Updated by RAMGANESH

Dear All,

 

I am working on Rollover analysis of the bus model and it contains 10 lakh elements. I am trying to apply Angular velocity through Initial velocity around an axis option,but the system seems to be not responding for more time and it is not generating. Kindly provide guidelines.

 

Thanks

RAM

<?xml version="1.0" encoding="UTF-8"?>iNv.JPG

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    User: "Altair Forum User"
    Altair Forum User
    Altair Employee
    Updated by Altair Forum User

    Hi Ram,

     

    FYI,

     

    User: "Altair Forum User"
    Altair Forum User
    Altair Employee
    Updated by Altair Forum User

    You can also try using HyperCrash by assigning /INIVEL/AXIS card. Select type as AXIS.

     

    <?xml version="1.0" encoding="UTF-8"?>HC.JPG

    User: "RAMGANESH"
    RAMGANESH
    Altair Community Member
    OP
    Updated by RAMGANESH

    Dear Prakash & George,

     

    Thanks for your valuable guidelines. I have applied the angular velocity to my model and the simulation starts running but the remaining time for solving shows larger (2361000 secs).

     

    What to do?

     

    Thanks

    Ram

    User: "Altair Forum User"
    Altair Forum User
    Altair Employee
    Updated by Altair Forum User

    Check the time step in out file. Can you share the .out file

    Did you impose any time step?

    User: "RAMGANESH"
    RAMGANESH
    Altair Community Member
    OP
    Updated by RAMGANESH

    Dear George,

     

    I had sent it through your drop box link.

     

    Thanks

    Ram

    User: "Altair Forum User"
    Altair Forum User
    Altair Employee
    Updated by Altair Forum User

    Hi Ram,

    There are many penetrations in the model. Even though the time step is not too low in the out file but interfaces will create issues during run. 

    For an interface, the gap of the interface must be verified if some failure happens on the master or the slave side of the interface.

    Please clear the penetrations and re-check the contact created, 

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