Hi AnyBody Team,
I am really new to the program and I want to use the basic human standing model and I want to fix the subjects lumbar spine. Since I am so new, I was trying just to turn the “BM_SPINE_RHYTHM OFF” but when I try to perform an analysis I get the error message
“…Study: Model is kinematically indeterminate: Position analysis failed :402 independent constraints and 420 unknowns”
I looked around and compared this to a study with the spine rhythm on and I can see that the missing drivers to make the model kinematically determinate are
“Main.HumanModel.BodyModel.Trunks.JointsLumbar.SpineRhythmDrv(18 constr. Segments(8):PelvisSeg Sacrum Seg L5Seg L4Seg L3Seg L2Seg L1Seg ThoraxSeg”
What should I do to make this kinematically determinate? My goal is to find the reactions are their feet just from standing with a fixed spine as opposed to a person without a fixed spine.