You can create local Cartesian coordinate systems in the CATIA Part Design workbench. Now you can specify that the local coordinates be transformed in the Nonlinear Structural Analysis workbench for use as cylindrical or spherical coordinates. You can use local coordinate systems with the following objects:

• Displacement boundary conditions

• Velocity boundary conditions

• Acceleration boundary conditions

• Spring and dashpot connection properties

• Point loads, distributed loads, and load densities

• Rigid and smooth couplings

For more information, see Using Local Coordinate Systems.