Why Static Optimization in Opensim doesn't work?

Anna Bicchi @Anna_Bicchi2

16 April 2021 1 4K Report

Hi everyone!

I'm trying to do Static Optimization in Opensim, loading the .mot file I obtained from IK tool in Opensim.

The SO starts, but seems never to ends.

How can I manage it?

Thank you in advance,

Anna :)

Size Zheng

Maybe the solver could not find the optimal solution. Only IK solution is not sufficient to SO. You are supposed to share your detailed working flow for better understanding.

Normally, we run RRA before SO in order to keep the dynamics consistent.

Badges
Science topic

Similar topics
Filing

How can I create a knee reinforcement motor in OpenSim software? Is there a ready model that I can use?

I need to put an extra motor on the knee to do part of my project. The process of doing it is needed in the use of other software and sub-programs.

03 July 2024 6,038 0 View

Has anyone successfully imported data from CAPTIV software into OpenSim?

Hello, I am currently collecting kinematic data on lower limbs using CAPTIV software from tea-ergo. The software outputs data in .bvh format, and I'm working on converting it to mot files....

14 March 2024 5,514 0 View

Is it possible to perform inverse dynamics analysis in OpenSim without using force plates?

I am a PhD student in ergonomics conducting research on lower limb biomechanics in real-world work environments. I am using a motion capture system and lower limb EMG to collect data during...

21 February 2024 1,393 3 View

How to prepare the IMU data for OpenSim?

I am collecting data on the upper limb using IMU from the Cometa System. I am having difficulties preparing my data to be used for OpenSim. The joint movement in OpenSim does not follow what it...

01 January 2024 9,289 1 View

Rencently, i found a stubborn problem on CMC processing with opensim 4.4 while simulating one drop jump trial. How can I manage it?

the ERROR was reported as: SimTK Exception thrown at InteriorPointOptimizer.cpp:264: Optimizer failed: Ipopt: Infeasible problem detected (status 2) OPTIMIZATION FAILED... CMC::computeControls:...

18 November 2023 4,619 1 View

How to introduce the value of IAP in an opensim model?

I am a graduate student and I am trying to study the effects of intra-abdominal pressure on the L5S1 vertebrae when lifting a weight from the floor. In particular, I would like to understand how...

25 February 2023 2,949 1 View

Analyze tool OpenSim?

Hi to everyone! I need to obtain the tendon force of certain muscles of the right upper limb after that the subject exerted a force. I found out the Anlyze tool of OpenSim gives as output a file...

09 March 2021 9,185 3 View

How to extract tendon forces with a biomechanical model on OpenSim?

Good Afternoon, I am trying to obtain the tendon forces of some muscles using a musculoskeletal model on OpenSim. The person ha applied a force to a sensor, then I have done the Inverse Dynamics...

07 March 2021 1,092 2 View

How I can validate my Human-Exosuit coupled kinetic model?

I wanna analyze forces between an ExoSuit and a Human for improving its design in terms of efficient actuation and safe interaction with the user. so I should derive a mathematical model. but:...

28 September 2020 5,719 6 View

Is it possible to use someone else's MOCAP data?

In order to study bone fracture in patients with osteoporosis, I need patient's exact muscle forces magnitude, location and direction (as FEM boundry conditions), while it is difficult to get...

18 September 2020 7,000 3 View