Define transient initial conditions using components

The Components type lets you define an initial condition constraint in terms of a global or local coordinate system.

1. Choose Home tab→Loads and Conditions group→Transient Initial Conditions .

2. In the Transient Initial Conditions dialog box, select Components from the Type list.

3. In the Model Objects group, click Select Object and select the geometry, node, element, or other FEM object to which the constraint will be applied.

4. In the Direction group, select the coordinate system to use to define the initial displacement and velocity.

5. (Optional) If you set Coordinate System to a local type, in the Local list, choose the method for specifying the coordinate system. For more information, see CSYS dialog box.

6. In the Initial Displacement group, enter the initial displacement magnitude (as a constant value or expression) for the appropriate degrees of freedom. For more information, see Expressions.

7. In the Initial Velocity group, enter the initial velocity magnitude (as a constant value or expression) for the appropriate degrees of freedom.

8. (Optional) In the Distribution group, select the method for distributing the initial conditions.Select Constant to apply the magnitude as a constant value.Select Spatial to use a unitless field to map the magnitude to the nodes.For more information, see Using fields and expressions to define boundary conditions.

9. Click OK.The constraint is applied to the model.

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