The properties for elastic bar elements are as follows:
The X axis of the LCS follows the bar from end A to end B. The Y axis of the LCS is used to calculate I2 (Iyy) and the Z axis for I1 (Izz).
The formulas that are referenced are available in Mechanics of Materials books or can be computed by using section analysis programs.
- Part
specifies the part name to which the defined property will be assigned.
- Material
specifies the material name for the defined property.
- PID
specifies the property ID. Nastran property cards reference this ID.
- Type
Bar will be automatically selected.
- Cross Section Area
the value of the cross sectional area of the geometry.
- Moment of Inertia (I1)
the moment of inertia for the Z axis (Izz).
- Moment of Inertia (I2)
the moment of inertia for the Y axis (Iyy).
- Torsional Constant (J)
the torsional constant for the geometry. For a circular cross section, this value is the sum of Izz and Iyy.
- Normal X1, X2, X3
are the components of the orienting vector.
- LS-DYNA Beam formulation
Choose the LS-DYNA beam type.