5.3.3. Translational Joint Output

Constrained force and torque are reported in the Motion Postprocessor and their definitions are the same as for Revolute Joint Output.

Outputs for friction force are reported in the Motion Postprocessor as shown in the table below.

Figure 5.42: Definition of outputs for friction force in Translational joint

ParameterSymbolDescriptionDimension
Stiction DeformationDefinition of outputs for friction force in Translational jointThe stiction deformation is the relative displacement moved under the stiction range, and it is defined in Equation 5–45 of Friction in a Translational Joint.Length
Relative VelocityDefinition of outputs for friction force in Translational jointThe relative velocity is determined by a sliding velocity at a contact point between contacted surfaces, and it is defined in Equation 5–41 of Friction in a Translational Joint.Length/Time
Friction CoefficientDefinition of outputs for friction force in Translational jointThe friction coefficient is determined by the relative velocity and stiction deformation and defined in Equation 5–42, Equation 5–46, and Equation 5–47 of Friction in a Translational Joint.N/A
Friction Force Definition of outputs for friction force in Translational jointTotal frictional force is defined in Equation 5–56 of Friction in a Translational Joint.Force
Reaction ForceDefinition of outputs for friction force in Translational jointThe reaction force is the constrained force applied to the action marker in the x-y plane of the base marker of the translational joint.Force
Friction Force by Reaction Force Definition of outputs for friction force in Translational jointThe friction force by reaction force is defined in Equation 5–49 of Friction in a Translational Joint.Force
Bending MomentDefinition of outputs for friction force in Translational jointThe bending moment is the constrained moment applied to the action marker in the x and y-axes of the base marker of the translational joint.Force*Length
Friction Force by Bending Moment Definition of outputs for friction force in Translational jointThe friction force by bending moment is defined in Equation 5–50 of Friction in a Translational Joint.Force
Torsional MomentDefinition of outputs for friction force in Translational jointThe torsional moment is the constrained moment applied to the action marker in the z-axis direction of the base marker of the translational joint.Force*Length
Friction Force by Torsional Moment Definition of outputs for friction force in Translational jointThe friction force by torsional moment is defined in Equation 5–55 of Friction in a Translational Joint.Force
Pre Force Definition of outputs for friction force in Translational jointThe preforce is the user-defined static friction force.Force
Frictional Force by Pre Force Definition of outputs for friction force in Translational jointThe friction force by a pre-defined friction force is defined in Equation 5–48 of Friction in a Translational Joint.Force

Outputs for x clearance are reported in the Motion Postprocessor as shown in the table below.

Figure 5.43: Definition of outputs for X clearance in a Translational Joint

ParameterSymbol DescriptionDimension
Relative DistanceDefinition of outputs for X clearance in a Translational Joint The relative distance in the clearance direction in Equation 5–20 of Clearance in a Revolute Joint.Length
Normal ForceDefinition of outputs for X clearance in a Translational Joint The normal force on the action body in Equation 5–27 of Clearance in a Revolute Joint.Force
PenetrationDefinition of outputs for X clearance in a Translational Joint The penetration as defined in Equation 5–21 of Clearance in a Revolute Joint.Length
D penetrationDefinition of outputs for X clearance in a Translational Joint The penetrated velocity as defined in Equation 5–28 of Clearance in a Revolute Joint.Length/Time
Potential EnergyDefinition of outputs for X clearance in a Translational Joint 

The potential energy can be calculated as follows:

Definition of outputs for X clearance in a Translational Joint
Force*Length
Contact LossDefinition of outputs for X clearance in a Translational Joint 

The contact loss can be calculated as follows:

Definition of outputs for X clearance in a Translational Joint
Force*Length
Spring ForceDefinition of outputs for X clearance in a Translational Joint 

The spring force on the action body can be calculated as follows:

Definition of outputs for X clearance in a Translational Joint

Force
Damping ForceDefinition of outputs for X clearance in a Translational Joint 

The damping force on the action body can be calculated as follows:

Definition of outputs for X clearance in a Translational Joint

Force
Stiffness CoefficientDefinition of outputs for X clearance in a Translational Joint The stiffness coefficient as defined in Equation 5–30 of Clearance in a Revolute Joint.Force/Length
Damping CoefficientDefinition of outputs for X clearance in a Translational Joint The damping coefficient as defined in Equation 5–31 and Equation 5–32 of Clearance in a Revolute Joint.Force*Time/Length

Outputs for y clearance are reported in the Motion Postprocessor and their definitions are the same as for y clearance (above).