Ground Reacted Force Calculation

SCONE is a software tool for predictive simulations of biomechanical movement. It uses OpenSim for modeling and simulation, and performs optimization using various control strategies, including feed-forward control, proprioceptic feedback control, and bal
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Zijie Liu
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Joined: Mon Oct 21, 2024 12:25 am

Ground Reacted Force Calculation

Post by Zijie Liu » Fri Nov 29, 2024 1:15 am

Hello, may I ask how ground reaction forces are calculated in Scone? I am building a model based on the OpenSim human body model (simplifying the foot as two circles located at the heel and toe, with a radius of 0.03), and inputting joint data obtained from Scone simulation into this model. I am calculating the ground reaction forces based on the Hunt-Crossley Force (https://simbody.github.io/3.7.0/classSi ... Force.html). The normal forces are consistent, but the friction force I calculated is always positive, which is inconsistent with the Scone simulation. I believe I must have made a mistake somewhere. Could you explain how Scone calculates the friction force?Thank you.
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Thomas Geijtenbeek
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Joined: Wed Mar 12, 2014 8:08 am

Re: Ground Reacted Force Calculation

Post by Thomas Geijtenbeek » Fri Nov 29, 2024 7:45 am

Under the hood, SCONE uses OpenSim (or Hyfydy) directly to calculate the ground reaction forces...
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