Coordinate & Unit ConventionsΒΆ

  • The mesh (LS-DYNA) and Field II spatial axis conventions are different (this is unfortunate, but maintained for legacy compatibility).

  • LS-DYNA and mesh-related tools use a rotated, right-hand rule coorindate system:

  • Axial extends into -z,

  • Lateral extends into +y,

  • Elevation extends into -x.

  • LS-DYNA is run unitless, but scripts assume and scale quantitites assuming a CGS unit system.

  • Field II tools a standard, right-hand rule coordinate system:

  • Axial extends into +z,

  • Lateral extends into +x,

  • Elevation extends into +y.

  • Field II internally uses MKS units, but scripts will specify units on the inputs