"In finite element analysis, stresses are computed from displacement/deflections and are not in strict equilibrium with the applied loads. Internal forces are computed (integrated) from stresses and are not equal to reaction forces, but…"
Simulate Early, Simulate Often... In Rhino
Michael Freytag's Discussions
Querying Solution at Text Dots
A user asked for the ability to output solution values at the location of text dots. I've added to the documentation a script that does that. The script can be viewed at this…Continue
Started May 2
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Michael Freytag replied to Olivier Suire's discussion 'Floating license trouble'
"I did some checking. The SnS plug-in does not contact the server during plug-in loading, or during data reading, or during data writing - so the delay is probably not due to the licensing system.
That said, if you are getting license…"
Michael Freytag replied to Olivier Suire's discussion 'Floating license trouble'
"Olivier,
If a Rhino file contains Scan&Solve data, Rhino calls on the Scan&Solve plug-in to read the data. The SnS plug-in does do some minor license checking at the time the plug-in loads. If the server is unreachable, or a…"
Michael Freytag replied to djordje's discussion 'Analysing hollow structures with SnS'
"It is a command in Rhino:
View > Clipping Plane"
Michael Freytag replied to djordje's discussion 'SnSScript coding languages?'
"Coding is done in RhinoScript which is a variation of Visual Basic for Rhino. A nice user manual for RhinoScript can be found here.
Visual Basic is pretty easy to use once you get used to it, so we'll probably stick with that for…"
Michael Freytag replied to Nick's discussion 'Reaction Forces'
"I've added an example script to the documentation for SnSScript that computes (approximately) internal forces by integrating component stresses in the model. The script and documentation can be found at this link.
This script…"
Michael Freytag replied to Nick's discussion 'Crash when pressing done with two solved items'
"Yes, you can analyze more than one polysurface in a single Rhino document, with one caveat: Do not attempt to have more than one session of SnS open at a time. Scan&Solve won't currently prevent you doing this, but…"
Michael Freytag replied to Jose Cristos's discussion 'Linear Edge restrains'
"Jose-
Edge restraints are inherently non-physical (stress= force/area, area=zero), so I'm always skeptical of the stress results in their neighborhood. That said, I too am also seeing the odd "clamping" behavior, which suggests…"
Michael Freytag replied to Jose Cristos's discussion 'Linear Edge restrains'
"Jose,
Thank you for pointing out this bug.
I found the source of the trouble and corrected it. Download the latest version (1.6.1.3) from here and let me know if it works better.
~Michael"
Michael Freytag replied to Jose Cristos's discussion 'Linear Edge restrains'
"Jose,
I am also seeing that behavior here. I don't have an explanation, but I suspect a bug. I will let you know what I find.
~Michael"
Michael Freytag replied to Fredrik Wenstøp's discussion 'Uneven visual distribution of boundary condition'
"Hello Fredrik,
The uneven distribution is purely visual. The glyphs are placed at the centroids of triangles covering the surface.
Because Rhino's triangulation algorithm puts more small triangles near the rounded edge, the boundary…"
Michael Freytag replied to Nick's discussion 'Reaction Forces'
"We are not working on reaction forces yet, but you could compute the resultant forces on any restraint surface by integrating the component stresses over them, using SnSScript. These resultant forces approximate the reaction forces, but are…"
Michael Freytag replied to Marco Romagnoli's discussion 'Creep analisys in hdpe material'
"Hello Marco,
Scan&Solve does linear stress analysis. Creep is a non-linear phenomenon that is not currently supported. We will add it to the wish list though.
Thanks,
Michael"
Michael Freytag replied to Daniel Karcher's discussion 'Exporting values for every analyzed point in the model'
"Hello Daniel,
Sorry to be bearing bad news... SnSScript is a WIP that is operable for holders of Academic and Commercial licenses only. It doesn't work with Student licenses.
~Michael"
Michael Freytag replied to Daniel Karcher's discussion 'Exporting values for every analyzed point in the model'
"Hello Daniel,
SnSScript has functions to query the solution at any point from within a RhinoScript script. In the documentation you'll find a script that uses 3 nested for-loops to generate a grid of points…"
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Scan&Solve™ for Rhino: Now With Gravity!
The latest beta version of Scan&Solve™ for Rhino is available from Intact-Solutions at www.scanandsolve.com. This version adds a significant new feature- GRAVITY. Simply choose the material for your shape, select restraints, and check the Gravity checkbox. Click the [Go] button to see the performance of your shape under it's own weight:…
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Posted on August 18, 2010 at 3:00pm
Announcing Scan&Solve™ for Rhino: Stress Analysis Made Easy
Scan&Solve™ for Rhino is a new plugin from Intact Solutions that completely automates basic structural testing of Rhino solids. No simplification, healing, translating, or meshing is needed. Depending on complexity of your shape and chosen resolution, you may need to wait for a few minutes, but the results are worth the wait!
Simply pick the material, choose restraints and specify loads on the faces of the solid model:…
Continue Posted on August 9, 2010 at 6:30pm — 14 Comments
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