What is different b/w using Contact Surface to define contact group v.s create SET_ELEM set?

alpha_21885
alpha_21885 Altair Community Member
edited October 2020 in Community Q&A

Hi,

 

To define contact pair (group) in O.S I often create contact surface then create contact group. It takes me a lot of time to choose contact surface for some part.

There is another option, I create set (SET_ELEMENT), then point to elements (by collector) to select all. It is a bit faster because I can script.

 

However, I am newbie and not sure which method is better about computation speed or accuracy?

Could you advise?

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited August 2018

    Hi @alpha

     

    Both will give you the same result.

  • alpha_21885
    alpha_21885 Altair Community Member
    edited August 2018

    Thanks Prakash for your very fast response as usual.

    So, it means that accuracy and computation speed is same.

     

    So could you advise when we use SET_ELEM, when we use contact_surface?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited August 2018

    Hi @alpha

     

    I am not sure which is more efficient in computation speed. 

     

    I will check and get back to you soon. 

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