Pipe/tube
-
Hi
I'm trying to create a simulation of small objects falling through semicircular canals (pipes, or tubes), but I can't get one object to fall through another - it bounces off as if the apparently open end were solid. Any tips?Thanks
Andrew -
SP doesn't really allow hollow objects or objects with depressions/holes in them. Consider making rectangular or cylindrical "bars" and making them hidden. Place these as guides along the path you want the objects to fall through.
-
Hello!
It is actually possible to create tubes in SketchyPhysics. As long the tube can be static and don't should moving in simulation.
I've created a sample file with "Instructions".
testing.skp
To run the simulation press "Play" and then press the red balls that just is Frozen
The Instructions is as a few scenes just click through them!PS!! The file is created with - Sketchup 8 - SketchyPhysics 3.2-Dec2 so if you have SU7 just message and I will upload a SU7.
-
If you would like to make a "moving tube" you need to "group" together some "boxes" that run the length of the pipe, have a thickness equal to the pipe wall thickness, and are rotate arrayed around the centerline (spring line??) of the pipe. I would guess that the trigonometry of all this means that the inside corners should match meaning that the angle between each "Plank" will be ((the number of planks-2)* 180)/number of planks.
"Connecting" the planks can be done either by grouping them or using joints. The second is probably much easier done now is SP32. If anyone has a teaching video on this please put it out here....if not I'll dig into my own files and post.
-
That's great stuff. The semicircular tubes will need to be able to be rotated to demonstrate how that affects where the balls will fall, though they should not fall themselves. Can I use the posted solution from hpnisse for this, or does it mean I will have to create composite tubes as described?
thanks,
Andrew
-
Should the tube rotate can't you use my method, cause them are always static.
Then you should use "mptak" method thats will works fine. -
similar issue with solution here:
http://forums.sketchucation.com/viewtopic.php?f=61&t=29422
This example leaves the receiving cylinder on the platform as static, but you can disable static on that cylinder's group.
jeff
-
On a semi related link I noticed on the model below that block defined as static meshes performed slightly
differently than those defined as boxes that were made static. The latter seems to better describe reality. This model was done with SP32.
Advertisement