Principal Components and Positioning
These sections are available for the Principal Stress Volume, Principal Stress Surface, and Principal Stress Line plots:
Principal Components
Under Principal Components, select a Type — Principal stress or Principal strain — to visualize either the principal stresses (the default) or the principal strains as vectors.
From the Data list, choose one of the available principal stresses or strains (depending on the type selected above); for example, Solid mechanics: Principal stresses. The principal values and directions are then defined based on the selected data. If you choose Manual, you can enter the following values and direction components:
•
Under Principal values, enter information in the First, Second, and Third Value fields. The default are the three principal stresses (solid.sp1, solid.sp2, and solid.sp3, for example, for a Solid Mechanics interface; the prefix is the Name of the physics interface node), plotted using red, green, and blue arrows, respectively.
•
Under Principal directions, enter information in the table under First, Second, and Third for the X, Y, and Z coordinate fields. The defaults are the directions (eigenvectors) for the first, second, and third principal stress.
For transient problems, enter a Time.
Positioning
This section is not available for 3D Principal Stress Surface plots or for Principal Stress Line plots.
Under Positioning, select an Entry method: Number of points or Coordinates for the X grid points, Y grid points, and Z grid points. If Number of points is selected, enter the number of Points in each direction (the default is 7 for Principal Stress Volume plots and 15 for Principal Stress Surface plots). If Coordinates is selected, enter Coordinates (SI unit: m) or click the Range button () to define a range of values.
In the settings above, X, Y, and Z appear by default as the coordinate names if the plot uses data defined using the material frame. If the data is defined using a spatial frame, for example, x, y, and z appear instead.