1D Meshing Connections

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Hello,

 

I am trying to model a space frame chassis along with a seat and I have successfully modeled the chassis using 1D elements as shown in the chassis tutorial. The problem I am having is how to attach a seat to the chassis model. The seat is a 2D mesh and I am trying to use spot connection.

 

Is this an applicable method of connecting the 1D element to the 2D seat? Are connections even possible with 1D elements? 

 

Any help with this is greatly appreciated. Thank you.

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited November 2016

    Hi,

     

    You can try that way. See the link below:

     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2016

    Thank you for the help, the connection realized though now I have a Error #1026 saying that my PLOTEL has duplicate ID's. I have seen some solutions for RBAR but I don't know if the method is the same for PLOTEL. 

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2016

    Also I don't know why I am getting a PLOTEL because I am using RBAR property for spot weld.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2016

    Hi @Emilio Concha

     

    Can you check if there are any PLOTEL elements?

     

    If possible please share the model. 

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2016

    I closed the file and reopened it and now the problem is with a RBAR and having the same identity.

     

     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2016

    Thank you for sharing the file.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2016

    @Emilio Concha

     

    There is a zero length RBAR elements exists in your model. Delete that RBAR element and everything should be fine.

     

    Mask all elements except RBAR elements and try to delete the RBAR as shown in the image (RBAR in white)

     

     

    <?xml version="1.0" encoding="UTF-8"?>RBAR.PNG

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2016

    Those RBAR elements were my connectors from the seat to the chassis. If I delete them there is no loads transferred from the chassis to the seat. Is there another way to realize the connection so that it has a length?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2016

    Emilio Concha,

     

    Not sure why you have a zero length RBAR (GA and GB IDs are same and this is not valid for RBARs).

     

    Delete and re-create weld again.

    <?xml version="1.0" encoding="UTF-8"?>Emilio.PNG

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2016

    I remade the connection and it didn't help. Is there something more to this that I may be missing? Also how did you arrive to this window on the bottom right? I have been trying to find the RBAR components and have not been able to find it like you have.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2016

    Emilio,

     

    One other way is to create a rigid link. 

     

    Use the Cardedit Icon>> ELements>> select the RBAR element>>Edit

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