# elements

Unless otherwise specified, data names are accessible in level 3 only.

The following data names are only available for "core" solver templates routinely maintained by Altair:

`cogx`- The x center-of-gravity for the element. This takes into account the thickness and mass of the element.
`cogy`- The y center-of-gravity for the element. This takes into account the thickness and mass of the element.
`cogz`- The z center-of-gravity for the element. This takes into account the thickness and mass of the element.
`elementalxaxis`- The x-component of the element orientation direction for 2D elements.
`elementalyaxis`- The y-component of the element orientation direction for 2D elements.
`elementalzaxis`- The z-component of the element orientation direction for 2D elements.
`Ixx`- The I
_{xx}component of the mass moment of inertia for the element. This is calculated about the global origin (0,0,0). `Ixxcog`- The I
_{xx}component of the mass moment of inertia for the element. This is calculated about the element COG. `Iyy`- The I
_{yy}component of the mass moment of inertia for the element. This is calculated about the global origin (0,0,0). `Iyycog`- The I
_{yy}component of the mass moment of inertia for the element. This is calculated about the element COG. `Izz`- The I
_{zz}component of the mass moment of inertia for the element. This is calculated about the global origin (0,0,0). `Izzcog`- The I
_{zz}component of the mass moment of inertia for the element. This is calculated about the element COG. `Ixy`- The I
_{xy}component of the mass moment of inertia for the element. This is calculated about the global origin (0,0,0). `Ixycog`- The I
_{xy}component of the mass moment of inertia for the element. This is calculated about the element COG. `Ixz`- The I
_{xz}component of the mass moment of inertia for the element. This is calculated about the global origin (0,0,0). `Ixzcog`- The I
_{xz}component of the mass moment of inertia for the element. This is calculated about the element COG. `Iyz`- The I
_{yz}component of the mass moment of inertia for the element. This is calculated about the global origin (0,0,0). `Iyzcog`- The I
_{yz}component of the mass moment of inertia for the element. This is calculated about the element COG. `mass`- The summed total mass of the element. This takes into account both
`structuralmass`and`nonstructuralmass`. `material`- The ID of the material for the element. This takes into account the property, component or component's property to get this value.
`nonstructuralmass`- The summed nonstructural mass of the element.
`plylist`- The list of ply IDs or the stacking sequence for the element.
`plylistmax`- The number of ply IDs in the stack sequence for the element.
`principalaxis1`- The x, y and z components of the first principal axis for the element. This is calculated about the global origin (0,0,0).
`principalaxis1cog`- The x, y and z components of the first principal axis for the element. This is calculated about the component COG.
`principalaxis2`- The x, y and z components of the second principal axis for the element. This is calculated about the global origin (0,0,0).
`principalaxis2cog`- The x, y and z components of the second principal axis for the element. This is calculated about the component COG.
`principalaxis3`- The x, y and z components of the third principal axis for the element. This is calculated about the global origin (0,0,0).
`principalaxis3cog`- The x, y and z components of the third principal axis for the element. This is calculated about the component COG.
`refx`- The x-component of material orientation direction for 2D or 3D elements.
`refy`- The y-component of material orientation direction for 2D or 3D elements.
`refz`- The z-component of material orientation direction for 2D or 3D elements.
`structuralmass`- The summed structural mass of the element.
`thickness`- The thickness of the element. This only takes into account the thickness of the property assigned to the element.

## LS-DYNA Specific Data Names

The following data names are only available for LS-DYNA, or have specific behavior for LS-DYNA.

`nonstructuralmass`- The summed nonstructural mass added through *ELEMENT_MASS_PART_SET, *ELEMENT_MASS_PART or NSM in *SECTION.
`structuralmass`- The summed structural mass of the elements in the component.

## Version History

2019 - Added new data names `plyidlist`,
`plyidlistmax`, `refx`, `refy` and
`refz`.

2019.1 - Added new data names `elementalxaxis`,
`elementalyaxis`, and `elementalzaxis`.