03-16-2016 08:55 AM
Hi,
I was wondering regarding best practices for partitioning a surface.
Problem Statement:
I came across this problem where I extracted the surfaces of a rectangular box and when I meshed it (after non-manifold add) the element edges did not line up at the boundaries. Furthermore, I wanted to partition a few areas of interest so that I can mesh the area with refined elements.
Possible Solutions:
1) I created points and connected the points with curves. Then I used Geometry->Midsurface-> Trim with Curve
Let me know if you guys have a better solution.
Regards,
Saptarshi
Solved! Go to Solution.
03-16-2016 09:04 AM
Dear Saptarshi,
Please post a picture of the problem, this way we will be able to help you better, I don't understand the question very well, thanks!.
Best regards,
Blas.
03-18-2016 01:48 PM
Hi Blas,
For example, I want to partition this surface:
I created points along the curve, connected the curves and projected them onto the surface, which resulted in:
I was wondering if there was a better way to do this.
For example:
I also used the command Midsurface -> Trim with Curve to get a similar result (trim with curve partitioned the entire solid and not just the surface).
Regards,
Saptarshi
03-18-2016 02:18 PM
Dear Saptarshi,
In FEMAP you can make things and arrive to the same result using many, many different ways, this is the good of FEMAP, but the result is exactly the same:
Well, also the command GEOMETRY > MIDSURFACE > TRIM WITH CURVE is really powerful, in the past I use it a lot but nowadays not too much, you need to run with caution, the split is extended to the full body, and some times the result cause a disaster in the geometry integrity!!
Best regards,
Blas.
03-19-2016 10:29 AM
Hello!,
Also you can do the job with only ONE command: GEOMETRY > CURVES - FROM SURFACE > OFFSET CURVE/WASHER: the OFFSET mode can be used for oblong holes, slots, and other “general shapes” on many different types of geometric surfaces. FEMAP will ask you to select the appropriate curves to offset (Use METHOD>On Surface) and the result is the following picture:
Of course, this is valid for CONSTANT OFFSET, if this is not your case then the "classic" method of creating curves and then project curves normal to surface is the most flexible one.
Best regards,
Blas.