Tables

To setup a table, in the Inventor Nastran Model Tree, right-click on Tables and select New. Double-click on the cells to input your values.

• Name: Names the table.
• ID: The ID of the table is automatically updated by Inventor Nastran.

• Type:
  • Dimensionless-User Defined: Creates a user-defined table.
  • Load Scale Factor vs. Time: Used for creating transient loading for dynamic analyses, such as Direct Transient and Modal Transient.
  • Structural Damping vs. Frequency: Used for creating varying modal damping for modal-based dynamic analyses. Damping values are in the units of g=2C/C0.
  • Critical Damping vs. Frequency: Used for creating varying modal damping for modal-based dynamic analyses. Damping values are in the units of critical damping C/C0.
  • Q Damping vs. Frequency: Used for creating varying modal damping for modal-based dynamic analyses. Damping values are in the units of amplification or quality factor, Q. Quality factor is calculated by 1/(2C/C0).
  • Load Scale Factor vs. Frequency: Used for creating frequency dependent loading for dynamic analyses such as Direct and Modal Frequency Response.
  • Load Phase vs. Frequency: Used to define a change in load phase for Frequency Response solutions.
  • Convection Coefficient vs. Temperature: Used for temperature dependent convection coefficients in Nonlinear Heat Transfer analyses.
  • Emissivity vs. Temperature: Used for temperature dependent emissivity in Nonlinear Heat Transfer analyses.
  • Load Scale Factor vs. Temperature: Used to define temperature-dependent Young's modulus and thermal conductivity.
  • Heat Generation vs. Temperature: Used to define temperature dependent Heat Generation.
  • PSD (Acceleration) vs. Frequency: Used to define a power spectral density (PSD) curve in terms of acceleration with frequency for Random Response solution.
  • PSD (Force) vs. Frequency: Used to define PSD curve in terms of force with frequency for Random Response solution.
    • Data Interpolation: Specifies a linear or logarithmic interpolation for the x-axis or y-axis in case of PSD curve definition. When LogX and LogY is unchecked it is linear interpolation and if checked then it is logarithmic.

      

  • Response Spectrum - Displacement vs. Frequency: Used for measuring linear displacement of points in response to a range of frequencies.
  • Response Spectrum - Velocity vs. Frequency: Used for measuring linear velocity of points in response to a range of frequencies.
  • Response Spectrum - Acceleration vs. Frequency: Used for measuring linear acceleration of points in response to a range of frequencies.
    
• X-Column: Input X-axis data.
• Y-Column: Input Y-axis data.
• Sort Data: It allows to sort the data if it is required. Once the data is sorted you cannot revert it back.
• Show XY Plot: Generates a graphical representation of the Table (XY Plot). The example shown below was derived from the user input on the previous page.

  

  • XY Plot has the following features:
    • Curve Options:
      • Type: You can select between Line, Line+Symbol, Scatter, or Vertical Bars.
      • Step: You can set the step at the Start, End, or None. This option is only available when Line is selected under Type.
      • Splines: When this option is checked, a smooth continuous line is used to connect the data points. This option is only available when Line+Symbol is selected under Type or when Line is selected under Type and None is selected under Step.
      • Fill Area: When this option is checked, the area underneath the curve is filled in. This option is only available when Line is selected under Type.
    • Curve Display:
      • Color: The color of the curve can be changed by clicking on Choose Color.
      • Style: Solid or a variety of dashed and/or dotted line styles are available.
      • Width: Adjusts the line thickness.
      • Vertical Bar Width: Adjusts the width of the bars when Vertical Bars is selected under Type.
    • Copy Data to Clipboard: Copies the data into the clipboard where it can be pasted into a table or database, such as a Microsoft Excel spreadsheet, Notepad, Wordpad, etc.
    • Show Grid: Displays a grid when this option is checked.
    • Default Settings: Resets all the settings to the default ones.
    • Set As Default Settings: Allows you to define the current settings on the form as the default settings. These will become the settings XY Plot will revert to, when Default Settings is selected.
    • OK: Closes the XY Plot window.
• OK: Creates the table.
• Cancel: Cancels table creation.