Sum of force output for multiple muscle fibers

Main Forum
1

Hi,

I was wondering whether it is possible in AnyBody to obtain, from the results of a simulation, the total force generated by a group of muscle fascicles. For example, I would be interested in evaluating the total force of the Longissimus Thoracis, but in the chart of results, the Erector Spinae muscle folder contains several fascicles. I can see the Fout for each fascicle, but is there any way to obtain the total Fout of the Longissimus Thoracis?

Thank you,

Michele

2

Hi Michele

Yes this is possible, you can write something like this

 AnyVar ModelEnvelope = sum({Main.Model.HumanModel.Right.Leg.Mus.GluteusMaximus1.Activity,
      Main.Model.HumanModel.Right.Leg.Mus.GluteusMaximus2.Activity,Main.Model.HumanModel.Right.Leg.Mus.GluteusMaximus3.Activity});

You can also use a search function and write e.g.



AnyString MUS_Keyword ="Gluteus"

AnySearchFun sf_mus_force ={
   Search ="..REF_TO_MUSCLE_FOLDER_HERE." + .MUS_Keyword + "*.Ft";
}
AnyVector vec_mus_force=sf_mus_force();
AnyVar SumForce=sum(vec_mus_force);

Best regards
Søren

1 Like
3

Hello Søren,

thanks for replying me; I am sorry but I’m not sure I got it. Are the code examples to be included in the model before running the simulation, in order to have the desired output?
Is there any way to obtain what I would need after the simulation? I ask because the simulations I run are pretty slow and if possible it would be easier to avoid re-running them.

Many thanks,

Michele

4

Hi Michele,

I am sorry these lines needs to be included into the model before it runs…

Honestly i think i have done this thing long time ago, so without the need of a rerun and i have been trying to recreate this in different ways but i think it is not possible.

Best regards
Søren