Cervical Joint Reaction Force Direction

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3

Hi Søren,

Thank you for the answers.

I have followed the instruction from wiki as well as from here. (AnyForceMomentMeasure.any example file from the wiki is missing though)

AnyForceMomentMeasure C5C6SegmentJointReactionMeasure = 
      {
        //IncludeForces = ;
        //RefPoint = ;
        AnyForceBase &reaction = Main.HumanModel.BodyModel.Trunk.JointsCervicalSpine.C6C5Jnt.Constraints.Reaction;
        AnyRefFrame &cause = Main.HumanModel.BodyModel.Trunk.SegmentsCervicalSpine.C5Seg.C6C5JntNode;
        AnyVec3 Flocal = Main.Studies.InverseDynamicStudy.C5C6SegmentJointReactionMeasure.F*Main.HumanModel.BodyModel.Trunk.SegmentsCervicalSpine.C5Seg.C6C5JntNode.Axes;
      };

I put the code inside Main.Studies.InverseDynamicStudy.C5C6SegmentJointReactionMeasure.

My questions are:-

  1. Does it really matter (in terms of simulation time) where I put the code for AnyForceMomentMeasure (I will need to run simulation to get values for all cervical and lumbar joints for multiple subjects)?
  2. However, upon checking Flocal, the values are no different from the default JRF in Selected Output. The F (of C5C6SegmentJointReactionMeasure), however, produces 3 different curves which might be the solution that I need. But I couldn't make sense of this output as the order [0,1,2] changed and not sure about the definition either.

Please assist me on this. Thank you.

Kind regards,
Faizal