IAA

[Mohammadreza Rezaie]

Dear Experts,

I wonder if you would prepare a tutorial or an example of Induced Acceleration Analysis in detail in the intermediate or advanced examples section.

Regards

[Carmichael Ong]

IAA documentation can be found at https://simtk-confluence.stanford.edu/d ... n+Analysis with an example setup file.

It may also be helpful to see other projects that have used IAA, such as https://simtk.org/projects/nmbl_running/

[Mohammadreza Rezaie]

Hi Carmichael,

Thanks for your reply,

I'm aware of the IAA documentation, but what I'm looking for is how to compute the model GRF and estimate the errors relative to experimental GRF. Indeed, I don't know where I should define the foot markers (contact points) in IAA setup.
Would you please show me how I can do that?

Your response would be greatly appreciated.

Kindly Regards

[Mohammadreza Rezaie]

Hi again,

Should I back to OpenSim 3.2 to calculate models GRF by IndAccPI Analysis Plugin developed by dr. Tim Dorn ?
Here is his Analyze setup file which contains foot markers.

Code: Select all

    <AnalysisSet name="Analyses">
      <objects>
        <IndAccPI name="IndAccPI">
          <on>true</on>
          <step_interval>5</step_interval>
          <in_degrees>true</in_degrees>
          <kinetics_file>TM1Gait05_kinetics.mot</kinetics_file>
          <forces_file>.\SO_Results\TM1Gait05_SO_arms_StaticOptimization_force.sto</forces_file>
          <force_threshold>15</force_threshold>
          <weights>10000 100 1</weights>
          <footpoint_markers>r_fp_heel1 r_fp_heel2 r_fp_mt1 r_fp_mt2 r_fp_toe l_fp_heel1 l_fp_heel2 l_fp_mt1 l_fp_mt2 l_fp_toe</footpoint_markers>
          <output_grf_contribution>2</output_grf_contribution>
        </IndAccPI>
      </objects>
    </AnalysisSet>

I wonder If anyone would tell me how to do it in 4.x version of OpenSim

Regards