WARNING(OBJ1) error

Hi,

When I run InverseDynamics simulation, WARNING(OBJ1) errors occur.

...
WARNING(OBJ1) :   Muscle.any(1131)  :   subscapularis_4.SPLine  :  Number of allowed iterations during contact penetration removal has been exceeded in line segment 0. Final error at time 3.344 : 0.0579415 rel error, 0.0157349 abs error
WARNING(OBJ1) :   Muscle.any(1131)  :   subscapularis_4.SPLine  :  Number of allowed iterations during contact penetration removal has been exceeded in line segment 0. Final error at time 3.352 : 0.0113259 rel error, 0.0074622 abs error
WARNING(OBJ1) :   Muscle.any(1131)  :   subscapularis_4.SPLine  :  Number of allowed iterations during contact penetration removal has been exceeded in line segment 0. Final error at time 3.352 : 0.0113259 rel error, 0.0074622 abs error
WARNING(OBJ1) :   Muscle.any(1131)  :   subscapularis_4.SPLine  :  Number of allowed iterations during contact penetration removal has been exceeded in line segment 0. Final error at time 3.36 : 0.0109178 rel error, 0.00734386 abs error
...

What does this error mean?
And should I worry about this?

hi @twosejin

The error states that the muscle wrapping solver had trouble solving that muscle line segment.
The severity is related to your research question, the tolerance set and the error magnitude. So it is best that you decide how bad it is.
One way to try and alleviate it is to increase the number of points on the line segment using the subscapularis_4.SPLine.StringMesh property. But since this is a iterative solving it will probably slow down your model. Try with a factor of 2-4 and see if the error persists.

Best regards,
Bjørn

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