Spline3D Panel

The Spline3D panel allows you to add and edit three dimensional spline data. A spline3D entity can be used to capture non-linear characteristics of a force, bushing, or motion. While a Curve entity can be used to define a non-linear behavior that varies about a single independent variable, a spline3D can be used to define non-linear behavior that varies about two independent variables. An example of such an application is the combustion force acting on the piston of a reciprocating engine. The combustion pressure (and thereby the force) is dependent on the angle of rotation of the crank and also on the speed of the crank.

A spline3D consists of a x-vector (or column) and more than one y-vector. Each y-vector is defined on a certain z-plane.

3d_spline_panel_mv

Spline3D panel

The Spline3D panel contains the following tabs:

Properties

Attributes

User Defined

A Spline3D is written as a Reference_Spline statement to MotionSolve and a SPLINE statement to Adams.

1.	From the Project Browser, select the parent container to which the spline is to be added.

2.	Right-click on the parent container folder in the Project Browser and select Add > Reference Entity > Spline3D from the context menu.

-	Right-click on a Spline3Ds folder (if it exists) in the Project Browser and select Add Spline3D from the context menu.

-	Right-click the Spline3D icon on the Reference toolbar.

The Add Spline3D dialog is displayed.

3.	Assign a label to the spline in the Label field.

The spline label can be changed at any time.

4.	Assign a variable name to the spline in the Variable field.

The variable name is required and cannot be changed after it is defined.

5.	Enter any notes in the Note text box.

6.	Click Apply.

Click OK.

The spline is added to the model.