Sjack Abeling Gravity Wheel and the Worlds first Weight Power Plant

[Justalabrat]

Stefan, In case you missed it....

It is essential to have a good look at this.

Imagine a weight receiving spin because it is pulled by gravity along a ramp. It hits a barrier at an angle and transfers the spin to that barrier. Experiment by turning the spoke more and more parallel to the ramp in small increments and watch V0 for the barrier. Pause directly after hit to see full translation of spin. At a certain angle, a significant "jolt" is given to the barrier, which is disproportionate to the momentum of the dumbbell axle.

Just a note, if you set the barrier not to collide with the ramp, it will keep spinning forever. That might be a bug.

But then I am Justalabrat

[Omnibus]

Stefan, set it to some large number (to model absolutely elastic collision; the absolutely non-elastic collision in you example is as expected -- the bodies remain stuck together). It goes berserk. Something isn't right.

[AquariuZ]

Come on people.

You are basically saying that every model made in wm2d for e.g. collision analysis is wrong because the default elasticity settings for all materials are wrong.

That is quite a statement.

The angle of the spoke or sleeve is calibrated for standard materials at 0.579 rad. Differnt materials require different angles for optimal jolts.

Material ::::::: Jolt

standard::::::::::: -4.256 rad/s
steel::::::::::::::::: -0.049 rad/s BUT at P0 = 0.844 rad (steeper Spoke) already -0.249 rad/s!
ice:::::::::::::::::::: -0.055 rad/s
wood::::::::::::::::: -0.106 rad/s
plastic::::::::::::::: -0.057 rad/s
clay:::::::::::::::::: -0.191 rad/s
rubber::::::::::::::: -0.011 rad/s
rock ::::::::::::::::: -2.011 rad/s

Saying that a basic principle like elasticity may be the cause is simply ludricous, it would render the software completely useless for ANY modeling.

Well, it is easy enough to test in real world with some spinning pinballs and a ramp.

[AquariuZ]

Stefan, set it to some large number (to model absolutely elastic collision; the absolutely non-elastic collision in you example is as expected -- the bodies remain stuck together). It goes berserk. Something isn't right.

What do you expect if you maximize elasticity.

Would be a hell of a cat toy though.

[Omnibus]

The conclusion is the program doesn't work well with springs, as @mondrasek warned, with elastic collisions etc. In these cases, again as @mondrasek warned, we have to use palliative measures such as air resistance, dampers etc. Fortunately, we don't have these kinds of problems in our concrete example reproducing Abeling's patent. In our case, extra care should be taken only regarding the rigid joints which Stefan warned cause problems. These problems can be fixed by changing the properties of the rigid joint from Optimized to Measurable. That's all at this point, as far as I can see.