calculation of center of pressure using Hunt and Crossley contact model
Posted: Tue Oct 01, 2024 6:10 am
Hi expers,
i have a question using Hunt-Crossley contact model to calculate center of pressure applying on foot.
I use opensim model(Bianco et al. 2023, Simulating the effect of ankle exoskeleton torques on walking kinematics, https://simtk.org/projects/balance-exo-sim) that contains six Hunt-Crossley contact element on foot.
When i give the input motion kinematics(.trc) in this model, it works well, reporting 3-axis force and moment of each contact elements.
but this model doesn't provide COP trajectory of each simulation frame.
So, i think i have to calculate the COP by myself.
The method to calculate the COP i guess is using the location of each six element.
I wanna know that this contact element's force applying point is equal to the center of element.
if not, how can i calculate the COP?
need help, thanks!
i have a question using Hunt-Crossley contact model to calculate center of pressure applying on foot.
I use opensim model(Bianco et al. 2023, Simulating the effect of ankle exoskeleton torques on walking kinematics, https://simtk.org/projects/balance-exo-sim) that contains six Hunt-Crossley contact element on foot.
When i give the input motion kinematics(.trc) in this model, it works well, reporting 3-axis force and moment of each contact elements.
but this model doesn't provide COP trajectory of each simulation frame.
So, i think i have to calculate the COP by myself.
The method to calculate the COP i guess is using the location of each six element.
I wanna know that this contact element's force applying point is equal to the center of element.
if not, how can i calculate the COP?
need help, thanks!