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Reaction force Extraction

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

I want to extract the reaction forces at the assembly level bolts (not at the mounting locations which can be determined by SPCF). Can anyone suggest how to extract?    Thanks in advance

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

    Hi Shashi,

     

    You can use GPFORCE to get force balance output. Goto Controlcards>> global_output_request>> GPFORCE to output grid point forces.

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

    Thanks for the response Mr. Prakash.

     

    I have tried with this option and i got the below results in .gpf file at a particular grip point for gravity load of 30g in Y-direction.

     

    .........................................................................................................................................................

    Grid point forces for node    73037 Subcase ID =        1

    --------------------------------------------------------------------------------

    Force  Element   x-force    y-force    z-force   x-moment   y-moment   z-moment

    --------------------------------------------------------------------------------

    SPC       --    0.000E+00  0.000E+00  0.000E+00  0.000E+00  0.000E+00  0.000E+00

    Appl.     --    0.000E+00 -4.122E-01  0.000E+00  0.000E+00  0.000E+00  0.000E+00

    F-MPC     --    2.101E+01  4.283E+01 -6.308E-01 -6.507E+01  3.140E+01 -3.138E+00

    BAR     358848 -2.101E+01 -4.242E+01  6.308E-01  6.507E+01 -3.140E+01  3.138E+00

    RBE2    358636  2.101E+01  4.283E+01 -6.308E-01 -6.507E+01  3.140E+01 -3.138E+00

    Total     --    3.553E-14 -1.563E-13  1.066E-14 -8.527E-14 -2.132E-14  0.000E+00

    --------------------------------------------------------------------------------

     

    But i am not understanding what it is giving, can you please explain all in detail.

     

    Thanks in advance.

     

    Shashi
    User: "Rahul_P1"
    Altair Employee
    Updated by Rahul_P1

    The table looks to me to be giving us the element type and the various force components,

     

    Why not contour the result in HyperView to understand,

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

    Is it really possible to see the reaction forces in contour at mountings?

    User: "Rahul_P1"
    Altair Employee
    Updated by Rahul_P1

    Yes, you should see spcf in the result type in HyperView, you can contour it and also query the value at required nodes.