Hello everyone its Paul from IIT Delhi, India. I'm currently into developing a Full body musculoskeletal model with 284 millard muscles. Whlie performing static optimization I'm facing some issues. I'ts saying----" SimTK Exception thrown at InteriorPointOptimizer.cpp:264:
Optimizer failed: Ipopt: Maximum iterations exceeded (status -1)
OPTIMIZATION FAILED...
StaticOptimization.record: The optimizer could not find a solution at time = 1.68.
The model appears unsuitable for static optimization.
Try appending the model with additional force(s) or locking joint(s) to reduce the following acceleration constraint violation(s):
pelvis_tilt: constraint violation = -0.714076
pelvis_tilt: constraint violation = -17.5362
pelvis_tilt: constraint violation = -3.48871
pelvis_tilt: constraint violation = -4.24084
pelvis_tilt: constraint violation = 0.0717516
pelvis_tilt: constraint violation = 7.01305
pelvis_tilt: constraint violation = -0.305839
pelvis_tilt: constraint violation = 232.979
pelvis_tilt: constraint violation = -2.70463
pelvis_tilt: constraint violation = 1.73887
pelvis_tilt: constraint violation = 216.006
pelvis_tilt: constraint violation = -25.953
pelvis_tilt: constraint violation = -31.628
pelvis_tilt: constraint violation = -30.4823
pelvis_tilt: constraint violation = -3.96549
pelvis_tilt: constraint violation = -112.489
pelvis_tilt: constraint violation = 161.124
pelvis_tilt: constraint violation = -101.615
pelvis_tilt: constraint violation = 34.0658
pelvis_tilt: constraint violation = 64.3363
pelvis_tilt: constraint violation = 76.7908
pelvis_tilt: constraint violation = 35.8519
pelvis_tilt: constraint violation = 2.56229
pelvis_tilt: constraint violation = -0.69352
pelvis_tilt: constraint violation = 291.634
pelvis_tilt: constraint violation = -444.046
pelvis_tilt: constraint violation = -84.516
pelvis_tilt: constraint violation = -226.13
pelvis_tilt: constraint violation = -171.901
pelvis_tilt: constraint violation = 162.937
pelvis_tilt: constraint violation = 70.6144
pelvis_tilt: constraint violation = 85.2942
pelvis_tilt: constraint violation = 9.34822
pelvis_tilt: constraint violation = 28.2919
pelvis_tilt: constraint violation = -86.1555
pelvis_tilt: constraint violation = -40.0353
pelvis_tilt: constraint violation = 32.4493
pelvis_tilt: constraint violation = 57.105
pelvis_tilt: constraint violation = -42.5477
pelvis_tilt: constraint violation = 344.926
pelvis_tilt: constraint violation = 475.549
pelvis_tilt: constraint violation = 2274.27
pelvis_tilt: constraint violation = -2389.87
pelvis_tilt: constraint violation = 131.454
pelvis_tilt: constraint violation = -217.175
pelvis_tilt: constraint violation = -63.321
pelvis_tilt: constraint violation = -106.15
pelvis_tilt: constraint violation = 100.139
pelvis_tilt: constraint violation = 24.0508
pelvis_tilt: constraint violation = -4.41061
pelvis_tilt: constraint violation = -14.7073
pelvis_tilt: constraint violation = -108.372
pelvis_tilt: constraint violation = 155.204
pelvis_tilt: constraint violation = 100.19
pelvis_tilt: constraint violation = -268.822
pelvis_tilt: constraint violation = 97.9953
pelvis_tilt: constraint violation = -84.9648
pelvis_tilt: constraint violation = -51.7863
pelvis_tilt: constraint violation = -27.6196
pelvis_tilt: constraint violation = -311.017"
Where as I have tried also attaching reserve actuator to my model.
Can anyone please suggest some futher steps to rectify this errors.
Any help will be appreciated. Thank You
Static optimization failed
-
SOUVIK PAUL
- Posts: 1
- Joined: Fri Jun 02, 2023 9:04 am
-
Thomas Uchida
- Posts: 1802
- Joined: Wed May 16, 2012 11:40 am
Re: Static optimization failed
The muscles or residual/reserve actuators may be too weak, or there might be noise in the data. Please see the "Troubleshooting" section of the "Getting Started with Static Optimization" page in the documentation for some possible solutions: https://opensimconfluence.atlassian.net ... timization.