Simulate Early, Simulate Often... In Rhino
Analyzing Complex Geometry
Hi:
I'm attempting to run a scan on some geometry (image below) - initially using the evaluation version of the software. This is a water tight polysurface - so is accepted by the software no problem.
I run the scan for high strength concrete with only a gravity load. The scan was coming out completely red - when I ran all of the geometry. One might think this would mean complete failure. However - if I run a scan with only the 3 or 4 lower courses it comes up mostly blue. I assume if I add more courses - the failure would occur at the bottom first with the top courses - which aren't supporting anything - coming up blue?
The fact the the whole structure turns red leads me to think that it may be too complex for the software to handle? Is this correct? Or am I missing something or analyzing incorrectly?
I love the software and would like to continue to use it for my projects - but would like to knwo what sort of complexity it can handle.
Best,
Glenn
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Replies to This Discussion
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Permalink Reply by Michael Freytag on
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Hello Glenn,
The display of danger level is capped at 1 regardless of what the maximum computed danger level is in the shape. This means even though the stresses may be higher at the bottom, the shape will be red anywhere the strength of the material is exceeded. You can adjust the upper limit of the danger level using the slider on the advanced view tab to get a feel for how the stresses are distributed.
Some things to try:
1. Try running at different resolutions. Based on the geometric complexity, you'll want to run at higher resolutions to observe the convergence behavior.
2. Check your modeling units to ensure they are consistent with what you intend because the stresses due to gravity in a 1 cm x 1 cm x 1 cm cube are significantly different than those in a 1 km x 1 km x 1 km cube.
3. Inspect the maximum principal stresses to see where things are under tension (positive maximum principal stress).
~Michael
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Permalink Reply by Glenn Wilcox on
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Thanks for the tips Michael! I will try these out and get back to you with how it worked.
g.
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