Inventing A Wheel

[MADjestic]

Hi there,

here's the illustration of a problem I've got: I'd like to create a wheel-like simulation, i.e. a wheel-like object (a tube with caps) must be able to roll and turn. To keep things simplest I've got the following set-up: angular velocity, X axis (angvelx) =50 (it makes the wheel push itself, move); angular velocity, Y axis (angvely) =50 - this is to turn left\right (to turn left constantly in this case).

Thus the wheel is supposed to move along a counter-clockwise circle-like trajectory. Instead it turns left and then angvelx starts banking it and barelling along global X axis - so it never moves as supposed, - as if angvelx was applied in global coordinate system.

Is there a way to make angvelx be a applied in localobject coordinate system so that it could move like a barrel around a circus arena?

see the attachment for a simple illustration:

wheel_problem.rar

EDIT: I've changed the setup a bit to illustrate the issue clearly.

[Val]

hey MADjestic.

I can not extract RAR file..

but I think problem is here : <<this is to turn left\right (to turn left constantly>>

Velosity and AngVelosity on RBDobj_node are just "initial state"

-- just for first frame.. -on creation (initial state)

[MADjestic]

hey MADjestic.

I can not extract RAR file..

Oh, bugger! And nobody had mentioned that! =)

Thanks, Val. Now I have re archived and re uploaded the file. (see above post)

hey MADjestic.

I can not extract RAR file..

but I think problem is here : <<this is to turn left\right (to turn left constantly>>

Velosity and AngVelosity on RBDobj_node are just "initial state"

-- just for first frame.. -on creation (initial state)

This works a little bit differently - RBDState is used to modify the angular velocity (set to 'Set Always').

[sho]

How about creating angular velocity using previous velocity?

It's a little messy though...

wheel_problem_sho.hipnc.zip

[MADjestic]

How about creating angular velocity using previous velocity?

It's a little messy though...

Ouch, Sho! that's hot!

Looks like a bit of voodoo magic though Checking the code right now

Thanks. Maybe somebody else can come up with a less sophisticated solution?

EDIT: no magic, everything looks pretty self explanatory (not something you are used to in an application XYZ though)