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Hi guys,
I would like to ask you why cannot I apply displacement initial conditions on joints? This happens for all kinds of joints, I can only apply velocity initial condition as shown in the figure below.
Thank you all.
In general, it's a better practice to apply your initial conditions to the Bodies, rather than the Joints. In the real (non virtual) world, F=m * a. The forces and accelerations act on the mass. The joints add constraints to the degrees of freedom to the bodies.
Applying an initial displacement to a joint implies that you want an initial translation to occur immediately at time =0, because the joint is not initially in the desired location for the start of the simulation. Numerically, this can lead to problems achieving a robust solution.
You can also apply a Motion to a Joint as a function of time if you need to move that joint to a particular position. This is a more reliable way to position the joint, as you are applying an enforced displacement.
Chris
Hello - To further add to Chris's description, the solver MotionSolve does not support applying displacement initial conditions on the joint. Hence it is not available for editing in MotionView.
regards
Praful
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