Applying Pressures

You can use a pressure to apply a distributed load normal to a surface.

This task shows you how to:

See Also
About Pressures
Creating Tabular Amplitudes
In Other Guides
Creating Simulation Features
Support Selection
About Step-dependent Actions
Feature Manager

Apply Uniform Pressures

You can apply a pressure that has the same value for all points within the selected supports.

  1. From the Loads section of the action bar, click Pressure .
  2. Optional: Enter a descriptive Name.
  3. Select the geometry supports in the model.

    A pressure must be applied to one or more faces. The pressure load is distributed over the selected supports.

  4. Optional: If the geometry supports include surface geometry, click to change the side of the surfaces on which the pressure is applied.
  5. Set the Field variation type to Uniform.
  6. Enter a magnitude in the Pressure field.
  7. Optional: Enter a Scale factor that is applied to the magnitude in each step.
  8. Optional: Select an Amplitude that defines the magnitude during the step.
  9. Optional: For harmonic response steps, specify the Phase angle for the amplitude curve. The phase angle determines the real (in-phase) and imaginary (out-of-phase) parts of the magnitude. A phase angle of 0º indicates a value with no imaginary component.
  10. Click OK.

Apply Hydrostatic Pressure Distributions

You can apply a pressure that varies according to height.

  1. From the Loads section of the action bar, click Pressure .
  2. Optional: Enter a descriptive Name.
  3. Select the geometry supports in the model.

    A pressure must be applied to one or more faces. The pressure load is distributed over the selected supports.

  4. Optional: If the geometry supports include surface geometry, click to change the side of the surfaces on which the pressure is applied.
  5. From the Pressure type list, select Hydrostatic.
  6. Enter a magnitude in the Pressure field.
  7. Enter the Z coordinate of the Zero pressure height.

    This is the height at which the pressure is zero.

  8. Enter the Z coordinate of the Reference pressure height.

    This is the height at which the pressure is the magnitude specified in the Pressure field.

  9. Optional: Enter a Scale factor that is applied to the magnitude in each step.
  10. Optional: Select an Amplitude that defines the magnitude during the step.
  11. Optional: For harmonic response steps, specify the Phase angle for the amplitude curve. The phase angle determines the real (in-phase) and imaginary (out-of-phase) parts of the magnitude. A phase angle of 0º indicates a value with no imaginary component.
  12. Click OK.

Apply Varied Pressures with Mapped Data

You can apply a pressure that has different values at different points on the model.

Before you begin: You must have your spatially mapped data prepared. The mapped data should specify different pressure values at various points in space.
  1. From the Loads section of the action bar, click Pressure .
  2. Optional: Enter a descriptive Name.
  3. Select the geometry supports in the model.

    A pressure must be applied to one or more faces.

  4. Optional: If the geometry supports include surface geometry, click to change the side of the surfaces on which the pressure is applied.
  5. Set the Field variation type to Mapped spatial data.
  6. Click Table.
    The Pressure Distribution dialog box opens, where you can enter or import the mapped pressure values.
  7. Choose the Data source for the mapped pressure values:
    • Table: Enter or import the mapped data into the table.

    • Referenced document: Select a 3DEXPERIENCE document that contains the mapping data. Click to search for the document in the 3DEXPERIENCE platform database. For details about the required file format, see Mapping Data File Formats.

      Changes in the referenced document are taken into account every time the simulation is run.

  8. If Data source is set to Table, specify the mapped data in the table:
    • To import the data, right-click anywhere in the table and select Import. For details about the required file format, see Mapping Data File Formats.
    • To enter the data manually, double-click in each cell and enter a value. For example, enter X-, Y-, and Z-coordinates and the corresponding pressure Value in each row of the table.
  9. Enter the Pressure outside the mapped region. This is a default pressure value.

    The simulation attempts to map all of the source data points and their associated pressure values onto points in the target model. For any target points where the simulation cannot map to a source point, it will substitute this default value.

  10. Select an Axis system definition for the coordinates of the mapped data values.

    • Global: Aligns the local feature triad with the global coordinate system.

    • Local: Aligns the local feature triad with a selected axis system in the model.

      Using a custom local axis system simplifies the three-dimensional definition of points in space—the X-, Y-, Z-coordinates are interpreted in the context of the local coordinate system.

  11. Optional: Select Plot Data to display symbols that indicate the locations and magnitudes of the mapped values on the model.

    Tip: If you click any row in the data table, the corresponding source point is highlighted on the model.

  12. Optional: To adjust the search control parameters, expand the Search tolerance.

    See Mapping Search Controls and Mapping Search Control Options for descriptions of these parameters.

  13. Optional: For harmonic response steps, specify the Phase angle for the amplitude curve. The phase angle determines the real (in-phase) and imaginary (out-of-phase) parts of the magnitude. A phase angle of 0º indicates a completely real (non-imaginary) value.
  14. Click OK.