Hello, I am trying to link an otrhosis to the lower limb of an OpenSim model. As my aim is to simulate the most realistic interaction between the leg and the orthosis I was thinking of implementing a spring, which properties would be able to mimic some kind of skin and soft tissue movement.
I do not want to model the interaction as a weld joint or weld constraint, I would like a PathSpring or another type of Spring between the point of the orthosis and the point of the leg that I want to link. My question is the following
Is there a way to define a spring between 2 point of my choice and not along a muscle or a body?
All the examples I have seen in the documentation define the PathSpring along a muscle and use its geometry, so I do not know if I can choose 2 arbitrary points.
Is there any better way to link 2 objects in OpenSim to simulate certain relative movements between two bodies?
By the way, I am avoiding to use contact models because I have seen that they do not perform well on static optimization or CMC and those are features in which I am interested.
Thank you very much.
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