Hey Nick, Thank you for getting back to me! I am currently using Thelen2003Muscle but will be transitioning to the Millard2012EquilibriumMuscle shortly. Alright, as long as the initial state is in static equilibrium for the level of muscle activation prescribed I think that is a good starting point....

Hi all, I am looking at the effect of muscle forces have on the stability of the spinal column upon impacts. I was wondering, how can I ensure my model's muscles to be producing the required force for a given state (activation, length) at the first time step of a forward simulation. This is because ...

Hi guys, For my needs I did something like this: Set up model and simulation environment(paths, variables etc.) for_loop var1 for_loop var2 functionToAdjustModelAndExecuteSimulation(model,var1,var2, simulation_setings) This function applied changes to model coordinates, muscle activations, external ...

Hi Elena, I also had a similar problem with some sort of memory allocation problem when running many FD simulations. In my case MATLAB would hard crash and I had to look through the error log to find out why. At the start I tried clearing the heap memory manually through MATLAB but that didn't work ...

Hi Carmichael, Thanks for the response! 1) Thanks for confirming, I have also had a look at these now. 2) That's a good idea, but unless geometric constraints exist for the point of force application then many solutions exist for an equivalent force system. I will try and have a look deeper into the...

Good afternoon everyone, I have a couple of questions regarding setting up contact models for simulating impacts. 1) Could I confirm that the dimensions of the stiffness and dissipation contact_parameters entered into the HuntCrossleyForce model in OpenSim (3.3) are Pascal (Pa) and non-dimesional (c...

Hi Lydia,

OpenSim 4.1 is a recent update and I am not sure CEINMS has been re updated to match that version of OpenSim (I think the last update was in summer 2019 for CEINMS). Maybe try and use CEINMS with OpenSim 3.3 on your device?

Hope that helps.

Cheers,
Pavlos

Hi Carmichael, Thanks for the suggestions! 1) I have managed to prescribe constant activations by safeDownCast() then setting the value with setMinimumActivation() to the individual muscles in the model. I'll give your ideas a go also to see if they provide more flexibility! 2) Yes I thought that mi...

Hello everyone, I am wanting to directly prescribe activations to my model's muscles so that I can run my simulations without having to allow time for excitation and activation dynamic "time lag". For the model's muscles to be at the required activation from the start of the simulation and through i...

Hey Guys,

Alright that's great thank you!

All the other MocoGoal functions were available but when trying to access MocoControlTrackingGoal the error was "Undefined function or variable "MocoControlTrackingGoal".

Cheers,
Pavlos