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nhall12-Amethyst
12-Amethyst
June 13, 2018
Solved

Volume Region Criteria

  • June 13, 2018
  • 2 replies
  • 2704 views

Just having a play around with the advanced simulate and attempting to create a fully mapped mesh.

 

As I have some holes in the surface (see very bottom), I am having to do some jiggery pokery to transition from the highlighted area to a nice, uniform, brick mesh but I have come across an issue that doesn't allow me to create certain volume regions such as this:

 

So I am wondering, am I missing some criteria that means I cannot create volumes in certain locations?

 mapped mesh.JPG 

Cheers,

Nick

Best answer by SweetPeasHub

 

 

The volume regions cannot have a single face on one side and multiple on the other.  There are 4 segments on one side and 1 on the other.  You have two choices.  1. Propagate 4 segments through entire model.  2. generate a transition from 4 to 1 segment.  This image shows option 1.

 

Mapped1.PNG

 

 

And this one shows option 2.  Option 2 requires some wedge elements to generate the transition whereas only bricks are needed for Option 1.

mapping5.PNG

 

On the other hand I prefer not to use volume regions but rather datum points to define the regions.

These images show how I use sketches and datum points to generate the mapped mesh.  It is a little more tedious because of picking 8 points instead of 2 faces as well as the initial generation of the points is more tedious.  I have had better success mapping this way.

Mapped2.PNG

 

Mapped3.PNG

 

Mapped4.PNG

 

 

There sill might be some further refinement needed as far as element sizes and smoother transitions.

 

regards,

2 replies

N
nhall12-AmethystAuthor
12-Amethyst
June 13, 2018

My first image is not appearing in the post, on my screen so here it is again....

 

S
SweetPeasHub17-PeridotAnswer
17-Peridot
June 13, 2018

 

 

The volume regions cannot have a single face on one side and multiple on the other.  There are 4 segments on one side and 1 on the other.  You have two choices.  1. Propagate 4 segments through entire model.  2. generate a transition from 4 to 1 segment.  This image shows option 1.

 

Mapped1.PNG

 

 

And this one shows option 2.  Option 2 requires some wedge elements to generate the transition whereas only bricks are needed for Option 1.

mapping5.PNG

 

On the other hand I prefer not to use volume regions but rather datum points to define the regions.

These images show how I use sketches and datum points to generate the mapped mesh.  It is a little more tedious because of picking 8 points instead of 2 faces as well as the initial generation of the points is more tedious.  I have had better success mapping this way.

Mapped2.PNG

 

Mapped3.PNG

 

Mapped4.PNG

 

 

There sill might be some further refinement needed as far as element sizes and smoother transitions.

 

regards,

    N
    nhall12-AmethystAuthor
    12-Amethyst
    June 14, 2018

    Can I just start by saying... Wow! That is a thing of beauty!

     

    I had a go with the datum point method with some success but I think I'll start this again, as currently it looks a complete horror show in comparison!

    Capture.JPG

    Thank you for your help.

     

    Nick

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