Simulate Early, Simulate Often... In Rhino
beam stress test
What a great tool ! For years I've been searching for a tool with that easy handling and such enormous possibilities all over the physics. My greatest respect for your works.
If you can keep this tool affordable or at minimum create as well a "lite-version" for it's first release-date - this will become a great impact all over.
My first steps exploring SnS were the test of a simple rafter serving as structure for a little roof. fixed on one side on a wall and on the other side on a concrete balcony.
1. test was with pressure = 0 on the upper side of the beam. See the strange result.
2. test was with pressure = 1 on the upper side of the beam. Why do I get a completely bended beam when there is not much pressure ?
Wish: When arranging the restraints it may happen that SnS takes a face which should not be used - but you cannot delete the false choice - so you have to restart the whole process for constraints again.
A simple delete button for the last picked face would be helpful.
Waiting for your comments
Harald
If you can keep this tool affordable or at minimum create as well a "lite-version" for it's first release-date - this will become a great impact all over.
My first steps exploring SnS were the test of a simple rafter serving as structure for a little roof. fixed on one side on a wall and on the other side on a concrete balcony.
1. test was with pressure = 0 on the upper side of the beam. See the strange result.
2. test was with pressure = 1 on the upper side of the beam. Why do I get a completely bended beam when there is not much pressure ?
Wish: When arranging the restraints it may happen that SnS takes a face which should not be used - but you cannot delete the false choice - so you have to restart the whole process for constraints again.
A simple delete button for the last picked face would be helpful.
Waiting for your comments
Harald
Views: 58
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Sparren-load0.jpg, 64 KB -
Sparren-load1.jpg, 59 KB
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Replies to This Discussion
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Permalink Reply by Michael Freytag on
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Harald,
The deflected geometry you see has the deflection scaled so the deflection is visible. The level of scaling is adjusted using the slider to the right of the []Deflected checkbox in the Advanced view. The scale is indicated by the number immediately adjacent to the slider:
Remember, Scan&Solve computes a numerical approximation of an idealized mathematical model of physical reality. In your first case, you applied a zero load. When Scan&Solve solves the equations the maximum deflection is approximately zero (about 0.000000000000000000768 in this case). The visualization section uses this number to set the deflection scale to 1/approximately_zero or 1301920000000000000 times the maximum deflection. In the case of your first test, the deflection you are seeing is highly scaled numerical noise.
The second test you show appears to be consistent with scaled deflection for a uniform load applied to the top of the beam.
When selecting faces to restrain or load, Rhino's selection mechanism is being used. To un-select a face, hold the [Ctrl] key and click on the face.
Thanks,
Michael
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