Extract Data

Extract Data allows you to extract contour values at various points along a path on solid elements.

Figure 1.


Paths are defined at various locations in the model. The number of points that divide this line into equal segments is specified. The contour value is extracted at the points. The results can be viewed as a HyperGraph plot or exported to a comma separated values (*.csv) file.

From the Query tools, click the Linearize tool.
Figure 2.


Note: Prior to version 2021, this tool supported only one method, Stress Linearization, and hence was called Stress Linearization and the path entity was called a stress classification line or SCL.
Figure 3.


The Extract-Linearize tool is displayed in the tab area and is broken down into three sections, each of which corresponds with the process order of using the tool.

Path definition

Allows you to create and manage the line definitions. Paths can be created by adding lines and picking start and end nodes. In addition, you can specify the method for which these paths are being defined. The following topic focuses only on the extract data method option.

Path properties such as the number of points and color can also be set once the path is defined. There is also an Intersection points column. If this option is checked HyperView, will automatically generate points at the intersection of the path with the edge or face of the elements. A Review option is available to view the path in the modeling window.

The Path table/list lets you specify the paths for which the contour value will be extracted at a given Loadcase/simulation step. You can add and delete paths from the list. The table/list can be sorted by clicking on the heading of each column. Repeated clicks on the column heading will toggle between ascending and descending order. In addition, keyboard shortcuts and a context menu are available for items within the list.
Note: Multiple Paths can be selected in the table/list using the standard CTRL/SHIFT+click functionality.
Tip: You can use the All, None, Reverse buttons to quickly select/deselect paths in the path table/list.

Calculation

This is grayed out and displays 'Use Displayed Contour' to indicate that extract data only works on the displayed contour.

Plot

Plot options shows 'Extracted values' and is grayed out to indicate that it will extract contour values. The layout of the plot windows can also be set. In addition, an option is available to export the calculation as a report to a comma separated file (.csv).

Comments

  • Extract Data is supported only on solid elements and works on any contour data.
  • Extraction is performed at the simulation step at which the Apply button is clicked. Therefore, even if the Path was defined in another step, when applied, the line is updated per the location of the start and end nodes at the current step.
  • You can either define the number of points or use the Intersection option to let HyperView generate the points. Both options cannot be used together.
  • You can use the same path for either extracting data or performing stress linearization but note that the calculation and plot options will differ. Also in case of extract data, the value is extracted in the contour resolved in system whereas for stress linearization, values are extracted in a local coordinate system defined by the line and linearization is done on these values. See Stress Linearization for additional details.
  • Extractions cannot be performed if some points are not on the model (outside specified tolerance) or not on solid elements.

    A message dialog will display stating "Unable to calculate values for line(s) 1. At least one point lies outside tolerance or is not on 3D elements” and you will be provided two options: either adjust the tolerance value or redefine the line(s).

    A suggested tolerance of twice the default value will be shown, which you can accept or modify. HyperView will attempt to recalculate with a new tolerance however if it still does not work, the message dialog will pop-up again with a new tolerance value. The process is repeated until a successful tolerance value is found. However, for some lines, the tolerance adjustment may not work, and you should try redefining the line.
  • The values are extracted as per the contour setting in the contour resolved in system.
  • There is no live link between the HyperGraph plot and the HyperView window from which it is generated.
  • The report for each line is automatically appended to the .csv file.