Thank you for your reply.
1 As for the ankle, they are normal after changing in the extradrivers.any file.
2 The posture of spine changes little as I adjust the hip and trunk markers and the look gets better but seems to be abnormal too. Also, the distance between the red and relative blue markers is close when the position of the spine is abnormal. That is to say, when I change the number in the “sRelOpt” , the red marker moves and their diatance becomes farther which may affect the kinematics operation. So I think if there are other reasons?
3 The kinematic operation runs successfully too. But as for the inverse dynamics, there are some problems.
3.1 First, it shows some warnnings saying:"
Flexor_Carpi_Radialis.SPLine : Number of allowed iterations for contact solution has been exceeded in Main.Studies.HumanModel.BodyModel.Right.ShoulderArm.Mus.Flexor_Carpi_Radialis.SPLine. Final error at time 1.987865e-001: 2.170215e-007 rel error, 3.340991e-006 abs error".
Another kind of warnning is about "
Flexor_Digitorum_Superficialis__Digit2.SPLine : Penetration of surface : cyl : Via-point 'Main.Studies.HumanModel.BodyModel.Right.ShoulderArm.Seg.Radius.Via_Flexor_Digitorum_Superficialis_Digit2' on 'Main.Studies.HumanModel.BodyModel.Right.ShoulderArm.Mus.Flexor_Digitorum_Superficialis__Digit2.SPLine' is located below the wrapping surface 'Main.Studies.HumanModel.BodyModel.Right.ShoulderArm.Seg.Hand.Ref.FlexorMuscleCyl.cyl"
3.2 After those warnnings, it failed in step 609 (all steps are 1748) for the reason “
Muscle recruitment solver : solver aborted after maximum number of iterations”
As the c3d contains no forceplate data, I use the GRF prediction model instead according to your reply. So I am wondering the reasons cotributing to the problems above.
4 As the inverse dynamics finished incompletely, I look at the results in chart 2D/3D. The GRF_Prediction_Right/Left is zero while the muscle force and muscle activity show some datas. This c3d is about a person jumping forward and maybe the GRF prediction method does not suit jummping?
5 Also the MaxMuscleActivity data is abnormal too as you can see in the picture"
I am also wondering where I can see the units as for different objects like “AnklePlantarFlexion” and some others.
Looking forward to your reply. Thanks for your reading.