Hi,
When perfoming static optimization on a neck model with given motion, at certain timesteps I get the failure message: 'opimization failed, model is unsuitable for static optimization' with very high acceleration constraint violations. For most of the other timesteps it works with violations of about 10E-12. What does this message mean?
When increasing the gravity of the model (4x 9.81) I get the message: model appears to weak for static optimization. Is there a chance to overcome this problem except modifying muscle properties? How can ID be used to clarify the problem? What can be read from the calculated moments from ID?
Thanks for your help,
Roger