Drop Height

Applies a velocity as an initial condition by calculating the velocity at which an object would be traveling if dropped from rest from a specified height. Available for use in Explicit Dynamics analyses only.

Additional Related Information

Object Properties

The Details Pane properties for this object include the following.

Category	Properties/Options/Descriptions
Scope	Scoping Method, options include: Geometry Selection: Default setting, indicating that you apply the feature to one or more bodies, which are chosen using graphical selection tools. Geometry: Visible when the Scoping property is set to Geometry Selection. In this case, use selection filters to pick geometry, click the Geometry field, then click Apply. Named Selection: Indicates that the geometry selection is defined by a Named Selection. Named Selection: Visible when the Scoping property is set to Named Selection. This field provides a drop-down list of the available Named Selections.
Definition	Input Type: Options include Angular Velocity, Drop Height, or Velocity. Define By: Defines how the drop height is specified. Options include: Drop Height: Drop Height: Visible when the Define by property is set to Drop Height. Height from which object will be dropped from rest prior to start of the analysis. Impact Velocity: Impact Velocity: Visible when the Define by property is set to Impact Velocity. Magnitude of initial velocity. Coordinate System: Use this property to specify the desired coordinate system. Direction: Direction in which initial velocity is applied.

Category

Properties/Options/Descriptions

Scope

Scoping Method, options include:

Geometry Selection: Default setting, indicating that you apply the feature to one or more bodies, which are chosen using graphical selection tools.
- Geometry: Visible when the Scoping property is set to Geometry Selection. In this case, use selection filters to pick geometry, click the Geometry field, then click Apply.
Named Selection: Indicates that the geometry selection is defined by a Named Selection.
- Named Selection: Visible when the Scoping property is set to Named Selection. This field provides a drop-down list of the available Named Selections.

Definition

Input Type: Options include Angular Velocity, Drop Height, or Velocity.

Define By: Defines how the drop height is specified. Options include:

Drop Height:
- Drop Height: Visible when the Define by property is set to Drop Height. Height from which object will be dropped from rest prior to start of the analysis.
Impact Velocity:
- Impact Velocity: Visible when the Define by property is set to Impact Velocity. Magnitude of initial velocity.

Coordinate System: Use this property to specify the desired coordinate system.

Direction: Direction in which initial velocity is applied.

Tree Dependencies

Valid Parent Tree Object: Initial Conditions.
Valid Child Tree Objects: Comment, Figure, and Image.

Insertion Methods

Use any of the following methods after highlighting the Initial Conditions object:

Click Drop Height on the Initial Conditions Context tab.
Right-click the Initial Conditions object or in the Geometry window and select Insert > Drop Height.

API Reference

See the Initial Condition section of the ACT API Reference Guide for specific scripting information.

Additional Related Information

See the following sections for more information: