Warn when fiber velocity is below max_contraction_velocity

opensim-org / opensim-moco

Solve optimal control problems for musculoskeletal models using OpenSim and direct collocation.

https://opensim.stanford.edu/moco

Apache License 2.0

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Warn when fiber velocity is below max_contraction_velocity #633

Closed chrisdembia closed 4 years ago

chrisdembia commented 4 years ago

Brief summary of changes

This PR adds a warning when the DGF fiber velocity is below the max_contraction_velocity. @antoinefalisse discovered that this is possible when fiber damping is large.

We should figure out how to handle this situation better, but I figured a warning would be good for now.

CHANGELOG.md (choose one)

[x] no need to update because...minor

This change is