If that case, Hip has F,F and F, but Knee and Ankle have F,F,F.F, F.
Why there is a difference between Hip and Knee, Ankle?
Does joint reaction force indicate X-Y-Z coordinate system?
If not so, are joint reaction forces shown below?
AMS is ver5.1 and AMMR is ver 1.4.
I beg your kindness,
Those values that you found are the right ones to see.
The reason why hip reaction forces have 3 components is that hip joint is a sort of the spherical joint. Knee joint is a kind of the revolute joint so it has 5 components(3 reaction forces and 2 reaction moments)
The direction of these reaction forces will follow the orientation of the first referred reference frame.
Thank you for your reply.
“The negative direction at the knee is not the same as the negative directions at other locations”
I think the joint reaction force of the knee is acting in the same direction as the hip, and ankle is not same direction.
Why joint reaction force of ankle acts to reverse ?
Why does it not act in the same direction?
I want to add ‘AnyDrawRefFrame’ in first reference frame of each joint.
But I don’t know where the first reference frame of that joint.
In addition I can’t find AnyDrawRefFrame in class list.
what should I do in order to add ?