2009

10 Return to Construction Mode.
The force is a constant value and unrelenting. As the dynamic,
counteracting influences of the force, part inertia, spring damping, and
spring tension cancel each other, the mechanism settles into a state of
static equilibrium.
Notice that even though the angle of the edge we used to specify the
force vector changes with respect to the mechanism, the vector remains
constant.
In this section, you add torque damping to one of the joints. To more clearly
see the influence of the torque damping, we will remove the influence of the
spring from the mechanism.
Create torque damping
1 Right-click Spring/Damper/Jack, and then check Suppress Actuator.
2 To get an idea of the motion of the gate without the influence of torque
damping (or the spring), run the simulation.
3 Return to Construction Mode.
4 Add damping to the revolution joint between the door and pillar parts.
5 Right-click Revolution (door:1, pillar:1), and then select Properties.
6 Click the dof 1 (R) tab.
7 Click the Edit Joint Torque button.
8 Select the Enable joint torque check box.
9 Enter 50 N mm s/deg in the Damping field and click OK.
Notice that the browser icon for this joint changes to indicate that
a torque value was applied to the joint.
10 Run the simulation. The door swings open as before, but the cyclical
motion of the door is quickly overcome by damping value.
11 Return to Construction Mode.
Working with Joint Triad | 71