Spline Gear Force
The spline gear force represents a force that couples two gear elements. The force is computed at the pitch circle considering the pressure (tooth) angle, as well as the helix angle. This force is then resolved to the appropriate forces and moments applied at the center of one gear, with the reaction force applied at the other gear.
The contact force formulation is based on the oilfilm thickness theory. See
Contact Force Formulation Based on Oilfilm Thickness Theory.
The structural stiffness is obtained from a spline depending on the relative position of the gears. The spline is contained in the stiffness property file. The stiffness should be expressed over one pitch, such that the pitch value ranges from 0 to 1. This represents the most generic implementation to consider the change of structural stiffness due to the number of teeth in contact and the profile.
The gear force lets you model gear interaction with backlash. When creating the gear force, the gears are rotated automatically to ensure proper meshing of the gears. In addition to the GFORCE, your template-based product creates an inplane joint primitive at the idealized point of contact with its normal tangential to the pitch circle. The inplane joint primitive is only active during the initial condition
Analysis phase of a
Simulation. This will ensure that the initial conditions (displacement, velocity, and accelerations) of the gears are calculated appropriately.
This component allows you to model helical and spur gear forces, where the centers of the gears are not fixed in space and the mesh frequency is considered. In addition to the 2D gear force component, this component will consider the tilting of gears.
The component outputs the following results:
■total_force - Total force, same as normal_force since friction is not included in the gear force.
■normal_force - Resulting force normal to the gear tooth surface.
■tangential_force - Resulting force tangential to the gear pitch circle.
■axial_force - Resulting force in axial direction, zero if gears are straight.
■torque_g1 - Resulting torque applied to Gear 1 at the i-marker location.
■torque_g2 - Resulting torque applied to Gear 2 at the j-marker location.