mesh with matching nodes with adjacent body

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

Hi,

 

In the attached model, I have 13 solid bodies assembled together. I was wondering what's the quickest method I could use to mesh each individual components in hex elements ensuring that the parts in contact have matching nodes.

 

Thank you

 

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Answers

  • Q.Nguyen-Dai
    Q.Nguyen-Dai Altair Community Member
    edited May 2018

    Hi,

     

    In the attached model, I have 13 solid bodies assembled together. I was wondering what's the quickest method I could use to mesh each individual components in hex elements ensuring that the parts in contact have matching nodes.

     

    Thank you

     

    Your CAD is NOT complicated. It's possible to make a nice hex mesh.

    What do you mean 'the quickest method'? Something like 'one-click' meshing?

     

    Unable to find an attachment - read this blog

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited May 2018

    I tried boolean but I end up with non mappable surfaces which I don’t know how to get rid of which I don’t know how to get rid of. Not one click meshing ;)/emoticons/default_wink.png' srcset='/emoticons/wink@2x.png 2x' title=';)' width='20' /> 

    Do you have a method please?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2018

    Hi dilen,

     

    Why don't you use solid edit > trim with lines > with sweep lines option?

     

    Thank you

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2018

    I have done a lot of splitting with manual editing of the nodes but my aspect ratio is not good (i want them to be less than 3) and the jacobian also (i want them to be > 0.7).

    Any ideas how to improve this please?

  • Q.Nguyen-Dai
    Q.Nguyen-Dai Altair Community Member
    edited June 2018

    There's a simple principle 'finer is (in general) better'. So refine your mesh and you'll get better jacobian.

    Or show/share your mesh?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2018

    Attached. Maybe the way I split the regions is not clever.

     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2018

    Hi dilen,

     

    You can improve the mesh quality still more as shown below. You need to create a duplicate component and move each solid into that and then mesh the solids separately.

    image.png.b667d2c38bea9340dc2e5183c86ebe05.png

     

    Please refer to below tutorial, you'll understand properly.

    https://altairuniversity.com/wp-content/uploads/2012/11/Tutorial_steeringwheel_hexa.pdf

     

    Thank you

     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2018

    Thank you!