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How to apply external force

Posted: Wed Oct 27, 2021 9:37 pm
by zakky
Hello, I'm new to Opensim.

Unit N
0 153.8696714
0.001 154.2095977
0.002 154.7130869
0.003 155.2535554
0.004 155.2820011

This is part of the force you exert when you pedal your bicycle.
How can we apply this data as an external force to the model?

Re: How to apply external force

Posted: Sat Oct 30, 2021 11:46 pm
by kernalnet
Hi,

First, convert the force data into OpenSim format (STO or MOT files):
https://simtk-confluence.stanford.edu:8 ... sto)+Files
https://simtk-confluence.stanford.edu:8 ... t%29+Files

Then, assign forces to bodies:
https://simtk-confluence.stanford.edu:8 ... ernalLoads

More hands-on tutorial can be found here:
https://simtk-confluence.stanford.edu:8 ... e+Dynamics

Best,
Mohammadreza

Re: How to apply external force

Posted: Mon Nov 01, 2021 3:03 am
by zakky
Thank you for reply.

Is this possible with a single axis force sensor?

Kind regards.

Re: How to apply external force

Posted: Tue Nov 02, 2021 11:54 pm
by kernalnet
Hi,

I'm not sure, you can make zeros for other axes.

Best