Hello Dimitar,

"It is probably because you haven't defined the ground reaction forces "
how do I define them if don't have them??

Hello!
I'm running the RRA tool for a squat performed with no weights (so I have no external loads) and my model has a weld constraint in the foot since I have no grf and my RRA gives me a huge negative mass adjustment -1.2123e+008

hello everybody, I would like to know if anybody knows any useful bibliography about muscle forces or related stuff while performing a squat exercise! Thanks!

yes

i was running the RRA and I got this crazy results for mass adjustment * Recommended mass adjustments: * Total mass change: -2.51188e+009 * ground: orig mass = 0, new mass = 0 * pelvis: orig mass = 11.777, new mass = -3.72847e+008 * femur_r: orig mass = 9.3014, new mass = -2.94472e+008 * tibia_r: or...

Hello! I am adding a bar on the shoulders of my model and seems to be good but when I do the scaling it doesn't display it any more. If i go display->show nothing happens, and if I do show center of mass/axes the will appear in the correct place. Any ideas why I can not see the bar in the scaled mod...

They where computed using another IK solver since I only have about 14 markers and openSim did a weird solution for it. when I load that motion (the one of the external solver) it seems to make sense with the motion being made (this motion is already filtered). also the openSim skeleton is scaled th...

I just did that and it still not work ... now it doesn't pop up any message it just shut down ... any more ideas of how to fix it?
The scaling and ID seem to work fine but the IK crashes

OpenSim usually works fine for me but today everytime I try to domething, browse or load a file this happens .. opensim54.exe has stopped working
A problem caused the program to stop working correctly.

Its been happening something similar to me all day. I can open a model and scale it, but when I try to anything else it crashes and closes. Sometimes I am browsing for a file to load and closes without me doing nothing. Is there a bug or some wrong with the source code of openSim?