Issue with adding invidual Soft Tissues
Submitted by Chathuri on Mon, 08/10/2009 - 00:56
Hi,
I have created a Walking model with muscles and performed forward and inverse analysis. So far it works fine. Now I want to add an Individual Soft Tissue of Hill-type with Origin at the Lower Torso and Insertion at the Lower Leg. I used Soft Tissue>>Create Individual Tissue to create this new muscle, and defined an activation spline of what I require.
However when I run the analysis with the new Hill-type soft tissue (Disabled Motion Agents, Trained muscles and Trained Joints) the new Hill-type soft tissue seem to be in the air detached from the walking model, resulting in a wobbly walking model.
Would you be knowing what I am doing wrong here?
Thanks in advance!
Good morning,Theres a few
Good morning,
Theres a few things you could try to figure out what is going on with this muscle.
1) If the new muscle is "in the air detached from the walking model," perhaps the markers defining it are not actually on the body. Try rebuilding the muscle, or moving its attachment points.
2) Make sure the origin and insertion of the muscle are both assigned to the appropriate parts in the model, and that it is not building one end on the ground part or something similar.
3) Is it an open loop musle? If so, try reducing the magnitude of the activation spline to see if that affects or resolves the wobble. If it is a closed loop muscle, you'll have to have the muscle built during the inverse analysis before you can train it (change it to closed loop).
4) Try increasing the muscle and/or joint gains on the already built and trained elements to see if they are able to resolve the wobble.
These should at least provide a starting point for investigating, and from here you should be able to see what the problem is and then tweak your model accordingly. Good luck!