Spring Page
Figure 1 Spring property page [Spring page]
The magnitude of the spring force is calculated according to the following equations:
Where, the inputs into the equation are defined in the following table:
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Stiffness Coefficient |
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Enter the coefficient that determines spring stiffness, namely the change in the spring force given a change in length (units are force/length). |
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Stiffness Spline |
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Fill in values of spring lengths and spring forces that will cover the range of extension and retraction of the spring. For more information, click here. |
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Damping Coefficient |
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Enter the coefficient that determines the damping force given the relative velocity of the spring end points (units are force-time/length). |
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Damping Spline |
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Fill in values of spring velocities and damping forces that will cover the range of positive and negative velocities in the spring. For more information, click here. |
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Stiffness Exponent |
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Specify an exponent that is applied to the change in spring length from the free length. |
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Damping Exponent |
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Specify an exponent that is applied to the rate of change of the spring length (spring velocity). |
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Free Length |
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Enter the length of the spring where it exerts no force other than the Pre-load. The default free length is the length of the spring when it is first defined. |
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Current Length |
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The current length of spring. |
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Pre Load |
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Specify an extra load or force in the spring. The force in the spring at its free length is the Preload. |
•Distance between Two Markers: Displays the distance between the base marker and the action marker. When clicking R, the distance between action marker and base marker will be recalculated.
•Force Display: Displays the resultant force vector graphically on Working Window. For more information, click here.
Graphic Page
Figure 2 Spring property page [Graphic page]
Figure 3 Definition of graphic options for the spring
•Spring Diameter: Defines the diameter of spring graphic.
•Number of Coils: Defines the number of coils of spring graphic.
•Distance between Base Marker and Damper: Defines the distance between a base marker and damper.
•Distance between Action Marker and Damper: Defines the distance between an action marker and damper.
•Spring Color: Defines the color of spring graphic.
•Each Rendering: Defines the rendering option in Each Rendering mode.
•WireFrame: Displays a body as wire frame in Each Rendering mode.
•Shade: Displays a body as shade in Each Rendering mode.
•ShadeWithWire: Displays a body as shade with wire in Each Rendering mode.
•Hide: Does not display a body on Working Window in Each Rendering mode.
•Simple Graphic: If this option is checked, the spring graphic is changed as simple shape.
•Length of Damper: Defines the length of damper.
•Coil Radius: Defines the radius of coil of spring.
Note
If a stiffness coefficient and a damping coefficient are entered the expressions by Parametric Value, these parameters are always applied each initial value of the expression. So, the entered values are not changed. To change the entered values by expressions, use the axial force, the translational force, the screw force, etc.
