What is the difference between RBE-2 and RBE-3 elements ?

Rishabh Bhatt_22219
Rishabh Bhatt_22219 Altair Community Member
edited October 2022 in Community Q&A

If one has to apply boundary conditions to holes shown as the attached photo then Which RBE should be used ?

image

In general for providing fixed support, certain displacement or load should one use RBE-2 or RBE-3 ? 

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Best Answer

  • Rafael Silva_20528
    Rafael Silva_20528 New Altair Community Member
    edited October 2022 Answer ✓

    Hello Rishabh,

     

    In general you should use RBE2 for constraints and RBE3 for loads.

    *RBE2 creates a "rigid motion" whereas RBE3 creates a "load distribution"

     

    Please find below a brief summary of each:

    image

Answers

  • Rafael Silva_20528
    Rafael Silva_20528 New Altair Community Member
    edited October 2022 Answer ✓

    Hello Rishabh,

     

    In general you should use RBE2 for constraints and RBE3 for loads.

    *RBE2 creates a "rigid motion" whereas RBE3 creates a "load distribution"

     

    Please find below a brief summary of each:

    image

  • AM_20700
    AM_20700 Altair Community Member
    edited October 2022

    Hello Rishabh,

     

    In general you should use RBE2 for constraints and RBE3 for loads.

    *RBE2 creates a "rigid motion" whereas RBE3 creates a "load distribution"

     

    Please find below a brief summary of each:

    image

    Any way to get the RBE3 to distribute the load equally instead of weighting the distribution by distance?

  • Rafael Silva_20528
    Rafael Silva_20528 New Altair Community Member
    edited October 2022
    AM_20700 said:

    Any way to get the RBE3 to distribute the load equally instead of weighting the distribution by distance?

    I would use the RBE2 instead or apply the forces directly to the nodes.

    image

  • Rishabh Bhatt_22219
    Rishabh Bhatt_22219 Altair Community Member
    edited October 2022

    Hello Rishabh,

     

    In general you should use RBE2 for constraints and RBE3 for loads.

    *RBE2 creates a "rigid motion" whereas RBE3 creates a "load distribution"

     

    Please find below a brief summary of each:

    image

    Thank you

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