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What is the stick contact interface ? how is it different from freeze?

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

What is the stick contact interface ? how is it different from freeze?

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    User: "Rahul_P1"
    Altair Employee
    Updated by Rahul_P1

    Ahilan,

     

     



    Prescribing TYPE=STICK is interpreted in OptiStruct as an enforced stick condition - such contact interfaces will not enter the sliding phase.  Of course, the enforced stick only applies to contacts that are closed. 

     

     

    Prescribing TYPE=FREEZE enforces zero relative motion on the contact surface – the contact gap opening remains fixed at the original value and the sliding distance is forced to be zero.  Also, rotations at the slave node are matched to the rotations of the master patch.  The FREEZE condition applies to all respective contact elements, no matter whether open or closed.