Velocities Panel

Use the Velocities panel to create concentrated velocities.

Location: Analysis page

Concentrated velocities are created by applying a load, representing velocities, to a node.

Velocities are load config 8 and are displayed as a vector with the letter V at the tail end.

Create Subpanel

Option Action
entity selector Select the entities to which the velocity will be applied.

In any case, the velocities are applied to nodes; this selection simply determines how those nodes are selected. Geometric points select the nodes at which they exist. Comps select all of the nodes contained within the chosen component.

If you choose comps or sets, HyperMesh draws the velocities using a single indicator. As a result, a new button called display appears. This allows you to indicate where in the model you wish the indicator to be drawn, and requires additional steps.

When nodes is selected, use the switch to change the selection mode.
nodes
Select individual nodes.


Figure 1. Example: Nodes Selection
faces
Select all of the nodes on 2D and 3D faces. If there are discontinuities on a 2D face, then only the nodes inbetween the discontinuities will be selected.


Figure 2. Example: Faces Selection
2D faces ext
Select all of the nodes on a 2D face that contain discontinuities.


Figure 3. Example: 2D Faces Ext Selection
loops
Select all of the nodes on continuous free edges that make a closed loop simultaneously, such as the perimeter of a hole.
Important: Only valid for SHELL elements.


Figure 4. Example: Loops Selection
free edges
Select all of the nodes on free edges of elements. If there are discontinuities on an edge, then only the nodes on the free edges inbetween the discontinuities will be selected.
Important: Only valid for SHELL elements.


Figure 5. Example: Free Edges Selection
free edges ext
Select all of the nodes on free edges of elements that contain discontinuities.
Important: Only valid for SHELL elements.


Figure 6. Example: Free Edges Ext Selection
edges
Select all of the nodes on free edges or shared edges (butt joints, L/corner joints, and T-joints) of elements. If there are discontinuities on an edge, then only the nodes on the edge inbetween the discontinuities will be selected.
Important: Only valid for SHELL elements.


Figure 7. Example: Edges Selection
edges ext
Select all of the nodes on free edges or shared edges (butt joints, L/corner joints, and T-joints) of elements that contain discontinuities.
Important: Only valid for SHELL elements.


Figure 8. Example: Edges Ext Selection
global system / local Specify the method of determining the velocity's magnitude.
magnitude = Specify the method of determining the velocity's magnitude.
constant components
Specify the direction and magnitude of the load by entering the X, Y, and Z values of the components.
constant vector
Specify the magnitude, then use the plane and vector selector to specify the vector along which the load should act.
curve, vector
When working with loads that are time dependent, use this method to first specify a magnitude (yscale) for the curve. Next, double-click curve to select an existing curve, then use the plane and vector selector to specify a direction, if necessary. Last, specify a factor for the curve's xscale to use the same curve for many different cases, but vary the scale of its intensity or time to match the needs of your current moment.
curve, components
Specify the X, Y, and Z components to define the direction and magnitude, for example, (2,2,2) will be twice the magnitude of (1,1,1). Next, double-click curve to select an existing curve. Last, specify a factor for the curve’s xscale to use the same curve for many different cases, but vary the scale of its intensity or time to match the needs of your current load.
relative size / uniform size
By default, loads are displayed relative to the model size.
relative size=
Display loads in a size relative to the model size (default 100).
uniform size=
Display all loads with the same size.
label loads Display the load's text labels in modeling window.
face angle / individual selection
face angle
Determines which of the selected support entities will have the panel entity (ex: load, boundary condition, vector, set definition, and so on) applied.
The face angle value is used to determine which faces will be selected based on the angle difference between the selected and adjacent face normals. If the angle between the normals of the faces is less than this face angle value the face is included. This process is similar for edge selection, except that the angle between edges is used instead of the angle between faces.
Important: Only available when the entity selector is set to nodes, and the selection mode is set to faces, 2d faces ext, free edges, free edges ext, edges, or edges ext.
individual selection
Select individual elements on a face or select individual free/shared edges of elements.
Important: Only available when the entity selector is set to nodes and the selection mode is set to faces, free edges, or edges.
edge angle
Split edges that belong to a given face. When the edge angle is 180 degrees, edges are the continuous boundaries of faces. For smaller values, these same boundary edges are split wherever the angle between segments exceeds the specified value. A segment is the edge of a single element.
Important: Only available when the entity selector is set to nodes and the selection mode is set to free edges, free edges ext, edges, or edges ext.

Update Subpanel

Input Action
entity selector Select the entities to which the velocity will be applied.

In any case, the velocities are applied to nodes; this selection simply determines how those nodes are selected. Geometric points select the nodes at which they exist. Comps select all of the nodes contained within the chosen component.

If you choose comps or sets, HyperMesh draws the velocities using a single indicator. As a result, a new button called display appears. This allows you to indicate where in the model you wish the indicator to be drawn, and requires additional steps.

When nodes is selected, use the switch to change the selection mode.
nodes
Select individual nodes.


Figure 9. Example: Nodes Selection
faces
Select all of the nodes on 2D and 3D faces. If there are discontinuities on a 2D face, then only the nodes inbetween the discontinuities will be selected.


Figure 10. Example: Faces Selection
2D faces ext
Select all of the nodes on a 2D face that contain discontinuities.


Figure 11. Example: 2D Faces Ext Selection
loops
Select all of the nodes on continuous free edges that make a closed loop simultaneously, such as the perimeter of a hole.
Important: Only valid for SHELL elements.


Figure 12. Example: Loops Selection
free edges
Select all of the nodes on free edges of elements. If there are discontinuities on an edge, then only the nodes on the free edges inbetween the discontinuities will be selected.
Important: Only valid for SHELL elements.


Figure 13. Example: Free Edges Selection
free edges ext
Select all of the nodes on free edges of elements that contain discontinuities.
Important: Only valid for SHELL elements.


Figure 14. Example: Free Edges Ext Selection
edges
Select all of the nodes on free edges or shared edges (butt joints, L/corner joints, and T-joints) of elements. If there are discontinuities on an edge, then only the nodes on the edge inbetween the discontinuities will be selected.
Important: Only valid for SHELL elements.


Figure 15. Example: Edges Selection
edges ext
Select all of the nodes on free edges or shared edges (butt joints, L/corner joints, and T-joints) of elements that contain discontinuities.
Important: Only valid for SHELL elements.


Figure 16. Example: Edges Ext Selection
global system / local Specify the method of determining the velocity's magnitude.
magnitude = Specify the method of determining the velocity's magnitude.
constant components
Specify the direction and magnitude of the load by entering the X, Y, and Z values of the components.
constant vector
Specify the magnitude, then use the plane and vector selector to specify the vector along which the load should act.
curve, vector
When working with loads that are time dependent, use this method to first specify a magnitude (yscale) for the curve. Next, double-click curve to select an existing curve, then use the plane and vector selector to specify a direction, if necessary. Last, specify a factor for the curve's xscale to use the same curve for many different cases, but vary the scale of its intensity or time to match the needs of your current moment.
curve, components
Specify the X, Y, and Z components to define the direction and magnitude, for example, (2,2,2) will be twice the magnitude of (1,1,1). Next, double-click curve to select an existing curve. Last, specify a factor for the curve’s xscale to use the same curve for many different cases, but vary the scale of its intensity or time to match the needs of your current load.
relative size / uniform size
By default, loads are displayed relative to the model size.
relative size=
Display loads in a size relative to the model size (default 100).
uniform size=
Display all loads with the same size.
label loads Display the load's text labels in modeling window.