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When do we use set displacement/ set reference, please put an example in explaining

User: "Karthic_20846"
Altair Community Member
Updated by Karthic_20846

Set displacement vs set reference in the system panel. When do we use set displacement/ set reference, please put an example in explaining

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    User: "Michele Macchioni"
    Altair Employee
    Updated by Michele Macchioni

    Karthic,

    • Reference is the System in which the nodal coordinates of your grids are written;
    • Displacement is the System in which the output (nodal displacement) are evaluated; 

    For OptiStruct the displacement system is thus the one w.r.t. which you are also constraining or enforcing a displacement using SPC or SPCD respectively.

    Hope this clarifies.

    Thanks

    Michele