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How to solve cyclic symmetry problem in Optistrcut (Normal Mode)

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

I have a established a 1/3 model (see fig attached). And I tried 4 different boundary conditions in left and right boundary area (sym-left and sym-right;sym-left and antisym-right;antisym-left and sym-right;antisym-left and antisym-right).

 

 

But when 4 results for these 4 loadsteps are combined, these results differ a lot compared with the whole model in Normal Mode Analysis.

 

How can I deal with this problem in OS, can anyone help me??  Thanks a lot!

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    User: "Rahul_P1"
    Rahul_P1
    Altair Employee
    Updated by Rahul_P1

    See section 15.3 discussing symmetry in the student guide , page 287

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

    See section 15.3 discussing symmetry in the student guide , page 287

    Sorry to interrupt, Rahul, where can I find student guide? I usually look up in online help but I haven't used  student guide yet.

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

    See section 15.3 discussing symmetry in the student guide , page 287

    I have found it in Book_practical_Aspect. Thanks

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