HyperCrash

Element

Element

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Element

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Check the Element Quality

1.Select parts in the tree (see Selection List for information on how to select parts in the tree).
2.From the menu bar, select Quality > Check Elements of Tree Selection.

The Elem sub-window opens.

3.Click overview-24 to set the Bad Elements, Overview window (in the middle of the Notebook page).

In this window, all the parts with bad elements are displayed.

4.Select the Criterion to check by clicking the appropriate radio button: All Elt.-Crit., Timestep, Min Size, Max Size, ..., etc.
5.Select parts:
•Click the lines in the Bad Elements, Overview window, or
•Click treeSelectUnselectAll-24 to directly select all the parts with a problem.
6.Click highlightPartColor to highlight the parts in the graphic window, or

Click highlightQualityColor to highlight the parts and each element of a particular quality, coded by color (three colors):

•green: elements of a good quality.
•orange: elements of an acceptable quality.
•red: elements of a bad quality.
7.Click saveList-24 to write the list of the bad parts to a text file.

A sub-window appears.

8.Enter a name for the report file and click OK or Cancel.
9.Click Close to close the menu.

 

Element checking

1.Check parts as described previously.
2.In the Bad Elements, Overview window, select a part (or a group of parts) and click details to set the window, Bad Elements, Details (in the middle of the Notebook page).

The list of bad elements is displayed in this window.

3.Select elements:
•Click the lines in the Bad Elements, Details window; or
•Click treeSelectUnselectAll-24 to directly select all the bad elements.
4.Click highlightPartColor to highlight the elements in the graphic window.
5.Click highlightQualityColor to highlight the elements of a particular quality, coded by color (two colors):
•orange: elements with an acceptable quality.
•red: elements with a bad quality.
6.Click saveList-24 to write the list of the bad elements to a text file.

A sub-window appears.

7.Enter a name for the report file and click OK or Cancel.

 

Element checking information

•Click selectGeneral-24 and pick an element in the graphic window.

In the lower part of the window, all the information about this element is displayed. The value for each criterion is written with the quality color code:

•green: the criterion is good.
•orange: the criterion is acceptable.
•red: the criterion is bad.

 

Element semi-automatic correction

There are three options to correct the elements manually:

1.Move the nodes one-by-one (Move node 1 by 1)
•Click MovePlaneNeighboringElems to move the node in the plane defined by the neighboring elements.
•ClickMovePlaneNodes to move the node in the plane defined by the node to move and two other nodes.
•Click MovePlaneNormalNodes to move the node along the normal of a plane defined with three nodes (the node to move and two other nodes).
•Click MovePlaneScreen to move the node in the screen plane.

(See Move node using the mouse for further explanation.)

2.Move several nodes at the same time (Move node 1 multi):
•Click MovePlaneNeighboringElems to move several nodes in the plane defined by the neighboring elements of the last selected node.
•Click MovePlaneNodes to move several nodes in the plane defined by the first selected node to move and two other nodes.
•Click MovePlaneNormalNodes to move several nodes along the normal of a plane defined with three nodes (the first node to move and two other nodes).
•Click MovePlaneScreen to move several nodes in the screen plane.

(See Move node using the mouse for further explanation.)

3.Move with a defined displacement:
•Click moveNodeDisplacement to move several nodes with a defined displacement (translation, rotation, scaling, etc.).

(See Move node with defined displacement for further explanation.)

The elements around the moving node(s) change color:

•green: the element quality is good with respect to all the criteria.
•orange: the element quality is acceptable with respect to all the criteria.
•red: the element quality is bad with respect to all the criteria.

 

Criteria

•Click limits-24 to display all the criteria and their limits.

The parameters are defined in the file, $hc/.hc_criteria.

Five classes - s (standard), 1, 2, 3, and 4 - are defined for the mesh criteria. Each class has specific parameters. (See Define mesh classes for more information).

 

Check the Mass of the Parts

1.Select parts in the tree (see Tree selection for information on how to select parts in the tree). To check the model mass, select the whole model.
2.From the Menu Bar, select Quality > Check Elements of Tree selection.
3.Select the Elem. sub-window.
4.Click massesGeneral-16 to check the mass of the selected mesh parts.

The mesh mass, the center of gravity and the spherical inertia of each part are displayed.

5.Click Update List to recheck the mass after a tree selection modification.
6.Click Close to close the menu.