Simulation > Creo Flow Analysis > Preprocessing > Defining Physics > Dynamics > Conditions > Rotational > Rotational Force Balance Model (1 DOF)
Rotational Force Balance Model (1 DOF)
The force balance equation for rotational motion in one direction is given as:
where,
I
moment of inertia
θ
angle of rotation in radians
t
time
Hydrodynamic Torque
where,
τhydronamic
hydrodynamic torque
τpressure
pressure torque
τshear
shear torque
Spring Torque
where,
τpreload
torsion preload torque
τspring
spring torque
kτ
torsion constant
α
angular acceleration
Damping Torque
where,
τdamping
damping torque
Dτ
damping coefficient
ω
angular velocity
Additional force may be added using additional force on body.
Retarding (Friction) Torque
where,
τfriction
friction torque
μ=μstatic
static friction coefficient for a stationary part
μ=μsliding
sliding friction coefficient for a moving part
N
normal component of the contact force