Free edges

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

Hello, 

 

I have free edges in my model as shown in the image! It is creating a problem in the mesh generation. Is there anyway I can equivalence the free edges with the adjacent surface? 

<?xml version="1.0" encoding="UTF-8"?>image.thumb.png.c3a43085947292226325cab0f111d943.png

Tagged:

Answers

  • Simon Križnik
    Simon Križnik Altair Community Member
    edited December 2018

    Hi,

     

    please use the Geom>edge edit>replace, specify proper tolerance and zoom in sufficiently to pick both overlapping edges. This can also be done with toggle (in the same panel), but does not provide the same control.

  • Viking_d
    Viking_d Altair Community Member
    edited December 2018

    Hi Ivan,

    There is only one edge! Replace- When I select edge on the two opposite faces, it says different edges must be specified. I have tried toggle and suppress as well, it does not seem to work!

  • Pranav Hari
    Pranav Hari Altair Community Member
    edited December 2018

    Hi vishruthdilip

     

    Can you please share the model?

     

    Thanks

  • Viking_d
    Viking_d Altair Community Member
    edited December 2018

    Hi,

    I have attached the model! 

    Unable to find an attachment - read this blog

  • Viking_d
    Viking_d Altair Community Member
    edited December 2018

    Hi,

    Any suggestions?

  • Pranav Hari
    Pranav Hari Altair Community Member
    edited December 2018

    Hi vishruthdilip

     

    Can you check or clean up your geometry. Its because the geometry is distorted and that is why you are not able to equivalence the free edges.

     

    Thanks

     

     

  • Simon Križnik
    Simon Križnik Altair Community Member
    edited December 2018

    @vishruthdilip

     

    you should first imprint the honeycomb free edges on the face plates using geom>surface edit>trim with lines>with lines

    and then perform replace edge to get manifold and shared edges:


    https://altairuniversity.com/wp-content/uploads/2012/04/Student_Guide_59-71.pdf

     

    Here is the edited model, however it is just a strart and far from perfect

    Unable to find an attachment - read this blog

  • brahmadev
    brahmadev Altair Community Member
    edited December 2018
    Altair Forum User said:

    Hello, 

     

    I have free edges in my model as shown in the image! It is creating a problem in the mesh generation. Is there anyway I can equivalence the free edges with the adjacent surface? 

    <?xml version="1.0" encoding="UTF-8"?>image.thumb.png.c3a43085947292226325cab0f111d943.png

     

     

    Hello vishruthdilip ,

     

    You can removw all those free edges in one go. Follow the below steps :

     

    Goem -> Surface_Edit -> trim with surfs/planes ->  self intersecting surfs

     

    Select all the surfaces which you want  and click on trim.

     

    Magic is completed.

     

    Hope it helped.

     

     

    Regards,

    Brahmadev.

     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited April 2019

    Hello,

     

    I got the next problem: There are some free edges (in red) in the inner part of geometry which generate trouble when meshing. 

    I've tried Toggle edge, but it doesnt' work right. Could any one help me to solve this problem?

     

     

    Thanks a lot,

    Julio

     

    <?xml version="1.0" encoding="UTF-8"?>preguntaForo.png

  • Simon Križnik
    Simon Križnik Altair Community Member
    edited April 2019

    Hi,

     

    try Geom>edge edit>replace. Check if there are duplicate surfaces with Geom>defeature>duplicates.


     

    Share the model if the issue persists.

  • Viking_d
    Viking_d Altair Community Member
    edited April 2019

    Hi, 

     

    You can also try Geom> surface edit> trim with surfs/planes> self intersecting surfs (select the surfaces) > trim

  • Pranav Hari
    Pranav Hari Altair Community Member
    edited April 2019

    Hi Julio

     

    Also, try geometry > surface edit > extend.

    Select all the surface and click on extend

    <?xml version="1.0" encoding="UTF-8"?>image.png

     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited April 2019

    I'm really grateful for the early and helpful answers you all gave me.

    I could finally fix the problem with Geom> surface edit> trim with surfs/planes> self intersecting surfs (select the surfaces) > trim

    This 'Geom>edge edit>replace' didn't work as the message 'Couldn't stitch to the gap' was shown, and the gap was too big. Tutorial was helpful, and i will keep it.

    I had also tried  geometry > surface edit > extend, but when extended i was loosing information about the edges (instead of a yellow line, I was obtaining a grey line).

     

    Here I show you the model fixed. Thanks again.

     

    <?xml version="1.0" encoding="UTF-8"?>slide47.png

Categories