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Specify
orientation
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If the materials in your model exhibit directional
properties, you can define their orientation. |
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Axis system
definition
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There are several axis
system choices:
- Global
- Defined by a constant orientation for the entire model.
- Local
- Defined by a displacement or rotation from the global system. It might move with a portion
of the model during deformation.
- Face and edge
- Defined by selecting faces and edges and specifying their
relation (creates a spatially varying orientation).
- For example, select a surface or face to define the normal
axis and the normal at the point closest to your selection is used as the
normal axis direction. Select an edge to define the primary axis; the point on
the edge closest to your selection defines the tangent used as the primary axis
construction direction.
- The axis system follows the selected face and edge through motion and deformation of the
model and recalculates axis locations according to their
relative motion.
Notes:
For shell sections and membrane sections, the element
normal is always preserved. The axis following the
normal direction is projected onto the surface as
the 1-direction. The 2-direction is the
cross-product of the element normal and the
1-direction. Face and edge selection is not
available for axisymmetric models.
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| Axis system
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Local axis systems must
be defined in another
app.
For detailed information, see
Defining an Axis System in the
Simulation Model Preparation guide.
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| Axis system type
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Cartesian specifies an axis
system where each point is located relative to an origin and to
three planes that intersect at right angles to the origin.
Cylindrical specifies a local axis system
where points are located based on their distance from a reference
axis. Note:
This option is relevant only for non-axisymmetric
models. Axisymmetric models use a Cartesian axis
system.
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| Axis for rotation
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An axis for additional rotation of the axis system.
For Face and edge systems, this axis is the
same as the normal direction definition. |
| Additional rotation
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Positive rotation is
measured using the right hand rule. You can enter a value in radians (rad) to
convert it to degrees.
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