Research Article

Software Tool for the Prosthetic Foot Modeling and Stiffness Optimization

Table 1

List of notations.

SymbolDefinition

Horizontal acceleration of the leg
Vertical acceleration of the leg
COPPosition of the center of pressure
Length of the ankle segment
Length of the unyielding foot segment
Length of the toes segment
Distance from the knee to the center of mass
Length of the shank
Horizontal distance from the CM to COP
Vertical distance from the CM to COP
Horizontal ground reaction force
Vertical ground reaction force
Amount of deflection in the elastic beam
Angle of deflection in the elastic beam
Externally controlled ankle joint angle
Bending stiffness of an elastic segment
Moment of inertia for the leg and foot
Mass of the leg and foot
Angle of the shank with respect to the horizontal
Joint torque at the knee joint