Use the Systems tool to create and apply user-defined coordinate systems to loads, supports, and displacements.

This is useful for aligning loads to a local coordinate system rather than the global coordinate system. Keep in mind that results are only shown in the global coordinate system.

Location: Structure ribbon, Setup group

In addition, systems can be manually defined in a .csv file and imported using the Load Cases table. They will also be imported as part of the geometry when opening a Catia, JT, ProE, Step, or NX file.

Figure 1. A two force member with a user-defined coordinate system.

Create a Local System

Create a local coordinate system and apply it to a load such as a force or support.

  1. On the Structures ribbon, click the Systems icon.

  2. Click any location on the model or in space to create a system.
  3. To translate or rotate the system:
    • Click the Move tool.

    • Enter the x, y, and z coordinates (translate).
    • Enter the θx, θy, θz values (rotate).
  4. Right-click and mouse through the check mark to exit, or double-right-click.
  • You can create cylindrical coordinate systems from the Systems tool microdialog.

  • Displacement components can be reviewed in local systems using the Animation toolbar.

Apply a Local System to a Load

Use the microdialog for forces, supports, and displacements to apply a local coordinate system to a load.

  1. Double-click the force, support, or displacement in the modeling window.
  2. Click the Global icon.

  3. Click a local system from the menu.
Tip: Systems can also be assigned in the Property Editor.

Import Systems Using the Load Cases Table

Use the Load Cases table to import loads, point parts, and/or systems from a .csv file.

  1. Open the Load Table Import.csv file in the Tutorials folder in the installation directory.
  2. Edit the file as needed to define your loads, point parts, or local coordinate systems.
  3. Open the Load Cases table by clicking the satellite icon that appears when you hover over the Loads, Disps, Accels, or Temps icon.
  4. Click the icon to import loads.