Force parameters such as spring and damping coefficients and connecting properties such as the acting and reacting bodies, and the locations on the bodies are defined in the Spring property dialog as shown in the figure and table below.

Figure 6.13: Spring property dialog

Figure 6.14: Spring graphics

Figure 6.15: Description of parameters in the Spring property dialog

Parameter	Symbol	Description	Dimension (Range)
1. Spring coefficient		Use to select a method to determine a spring force. When Spring Coefficient is selected, the spring coefficient can be defined with a constant value or a predefined Design Variable. When d-F Spline is selected, the spring force curve can be defined with a predefined Splines using the spline picker. For more information about this parameter, refer to Translational Spring Force.	Force/Length (Real≥0.0)
1. d-F Spline			Force (Spline)
2. Damping coefficient		Use to select a method to determine the damping force. When Damping Coefficient is selected, the damping coefficient can be defined with a constant value or a predefined Design Variable. When v-F Spline is selected, the damping force curve can be defined with a predefined Splines using the spline picker. For more information about this parameter, refer to Translational Spring Force.	Force*Time/Length (Real≥0.0)
2. v-F Spline			Force (Spline)
3. Synchronize with Geometry	N/A	Use to synchronize Free Length with an initial distance between two markers. If this option is not selected, the input for Free Length will be enabled.	N/A
4. Free Length		Use to set the free length with a constant value or a predefined Design Variable. For more information about this parameter, refer to Translational Spring Force.	Length (Real)
5. Pre Load		Use to set an actuating force with a constant value or a predefined Design Variable. For more information about this parameter, refer to Translational Spring Force.	Force (Real)
6. Distance Between Two Markers		Shows the distance between the base and action markers.	Length (Real≥0.0)
7. Coil Diameter	N/A	Use to set the coil diameter with a constant value as shown in Figure 6.14: Spring graphics.	Length (Real>0.0)
8. Coil Count	N/A	Use to set the number of coils with a constant integer value as shown in Figure 6.14: Spring graphics.	N/A (Integer>0)
9. Coil Length 1	N/A	Use to set the distance between the action marker and coil end point with a constant value as shown in Figure 6.14: Spring graphics.	Length (Real≥0.0)
10. Coil Length 2	N/A	Use to set the distance between the base marker and the starting point of the coil with a constant value as shown in Figure 6.14: Spring graphics.	Length (Real≥0.0)
11. Control buttons	N/A	If all necessary parameters are set, these buttons are enabled. For more information about the control buttons, refer to Entity Properties Access and Modification.	N/A

For more information about connectors, see Constraint Entity Connectors.