Creating a Void (Hole) Inside a Region in THERM – How to Do Boolean Subtraction?

[Vishal Kadia]

Hello,

I am trying to model a hollow section in THERM, where only the outer thickness should be modeled as solid and the interior should be a void cavity.

However, I am unable to create a void inside an existing region. My current workflow is:

1. I import my DXF as an underlay (not auto-convert).

2. I first trace the inner shape as a polygon and assign it the material “Void.”

3. Then I trace the outer boundary as a polygon.

But when I create the outer polygon, THERM fills the entire area as one solid region and ignores the inner void. The result is always a fully filled part instead of a hollow frame.

From what I understand, there does not seem to be any Boolean “Subtract Regions” function in THERM 8.1, and the “Fill Void” tool only works when the region is surrounded not inside one another.

[Robin Mitchell]

THERM cannot model "voids" in the geometry. Those voids would need to be filled with a material such as a frame cavity. 

Robin

--
You can view the THERM forum online at:
https://groups.google.com/g/LBNL-THERM
---
You received this message because you are subscribed to the Google Groups "THERM" group.
To unsubscribe from this group and stop receiving emails from it, send an email to LBNL-THERM+...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/LBNL-THERM/d940d7a2-9bba-4fba-80bf-3bbcce4e21fen%40googlegroups.com.

--

Robin Mitchell

Windows & Envelope Materials Group
Lawrence Berkeley National Laboratory