HyperCrash

Belt Generator

Belt Generator

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Belt Generator

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Create a seat belt

1.From the Menu Bar, select Safety > Belt Generator.
2.Enter a name in the Belt field and validate with Ok.

belt_generator

3.Click Type and select one of the following:
•Shells to create a belt with shell elements.
•Multi-strand to create a belt with multi-strands.
•Truss to create a belt with truss elements.
•Spring_3n to create a belt with a 3-nodes spring element.
4.Click Options and select one of the following:
•Automatic fitting
•R.Bodies create
•Fix given points

 

Node selection

1.Click selectSeatbeltNodes-35  for seat belt reference points.
2.In the Belt Position defined by Nodes window, click selectNodeGeneral-24.
3.In the graphic window, click a few nodes to define the belt trajectory. For Spring_3n belt type, select only three nodes.
4.Click Cancel in the Dialog menu bar to stop the node selection. The node list is updated.

If necessary, it is possible to move the selected nodes one-by-one:

•Select a node in the node list.
•Click modifyNode-24.
•Modify the X, Y, and/or Z coordinate(s).
•Click Apply to validate the modification, or Cancel to cancel it.

If necessary, it is possible to move all the selected nodes:

•Click modifyNodes-24.
•In the dX, dY, and dZ fields, enter the node displacement to apply.
5.Click Apply to validate the modification, or Cancel to cancel it.
6.Click OK to validate the node selection.

 

Part selection

The dummy parts on which the belt will be leaned must be selected.  Use one of the following methods:

1.Click selectPartGeneral-24 and pick parts of the dummy in the graphic window. When finished, answer the question in the Dialog menu bar with Yes or Cancel.
•Click selectEntityFromTree-24 to add the dummy parts selected in the tree.
•Click selectPartByBoxAdd-24 to add parts of the dummy by box selection:
oThe default box is rectangular.
oUse the SHIFT key to define a polygon box.
•Click selectPartByBoxRemove-24 to remove parts of the dummy by box selection:
oThe default box is rectangular.
oUse the SHIFT key to define a polygon box.

 

Belt components

•Gap between the dummy and the belt (Shells and Truss belt types only):
oSet the gap value in the Gap field.

or

oClick increaseDecrease to modify the gap.
•Belt width (Shells belt type only):
oSet the belt width in the Belt geometrical width field.

or

oClick increaseDecrease to modify the belt width.
•Number of shell elements in the length (Shells and Truss belt types only):
oSet the number of shell elements in the Nb elems in length field.

or

oClick increaseDecrease to modify the number of shell elements.
•Number of shell elements in the width (Shells belt type only):
oSet the number of shell elements in the Nb elems in width field.

or

oClick increaseDecrease to modify the number of shell elements.
•Transversal direction at the first node: This defines the belt perpendicular direction at the first node (Shells belt type only):
oClick the X, Y or Z radio button.

or

oClick the first selectGeneral-24 button and, in the graphic window pick a node. Next, click the second selectGeneral-24 button and, in the graphic window pick another node to define the direction.

or

oFill in the two X, Y, and Z fields defining the direction.
oClick reviewVectorGeneral-24 to display the direction in the graphic window.
•Transversal direction at the last node: This defines the belt perpendicular direction at the last node (Shells belt type only):
oClick the X, Y or Z radio button.

or

oClick the first selectGeneral-24 button and, in the graphic window pick a node. Next, click the second selectGeneral-24 button and, in the graphic window pick another node to define the direction.

or

oFill in the two X, Y, and Z fields defining the direction.
oClick reviewVectorGeneral-24 to display the direction in the graphic window.
•Material (Shells and Truss belt types only):
oClick databaseImport-24.
oIn the Material File window, select the desired material (law 2 for Shells type, law 1 for Truss type) and click OK.
oThe stress vs. strain curve appears on the screen. To confirm, click Yes in the Dialog menu bar.
•Property:
oClick databaseImport-24.
oIn the Property File window, select the desired property and click OK.

 

Belt creation

1.Click See to display the defined belt.
2.If necessary, the following can be modified:
•The node selection (see Node selection).
•The part selection (see Part selection).
•The belt components (see Belt components).
3.Once the belt is finished, click Save to save it.

or

Click Cancel to cancel the belt creation.

4.Click Close to close the menu.

 

Modify a seat belt

1.From the Menu Bar, select Safety > Belt Generator.
2.Click Belt list and select a created belt.  Follow the same steps as with Belt creation.

 

Delete a seat belt

In the tree window, select the seat belt part and delete it as with a normal part.  The model and the seat belt menu will be automatically updated.

See also

Dummy Positioner

Seat Deformer