Pendulum like structure doesn't get damped

[xman237]

Hi all,

I am trying to build a pendulum like structure. So far, I used one sphere joint at the top and added a dummy link below it. Then, I added another prismatic joint also to adjust the length of the pendulum. Detailed look can be found here: https://drive.google.com/file/d/13Grp72 ... sp=sharing

Then, I added wind by applying sim.addForceAndTorque() to my mass on the hook. However, when I set the wind force to 0 again, I expected that the swinging of my mass gets dampened over the time, which is not the case. The mass swings constantly over the time, as if there is no air friction and etc. : https://drive.google.com/file/d/1TjX7Zs ... sp=sharing ;plot: https://drive.google.com/file/d/1HE9ZDJ ... sp=sharing

How would one simulate the damping behavior of the swinging mass? Currently, I am using Vortex engine and would like to stick to it. I manually tried to edit the physics engines properties (Friction on) of the two spherical joints at the top, however no effect at all.

Thank you in advance

[coppelia]

Hello,

it appears that you can't specify friction for spherical joints, with the Vortex engine. The friction in X/Y/Z axis position menu item has a different meaning I guess.
I would rather try to apply some damping to the masses attached to those spherical joints, i.e. Damping and/or Auto angular damping tension ratio, in the materials dialog.

Cheers