Review the beam's neutral axis position and plot MoI and flexural
stiffnesses.
Restriction: Only available in the Nastran
and OptiStruct solvers in the Aerospace user
profile.
From the menu bar, click Aerospace > Beams > Beam Review.
Using this tool you can review beam attributes, such as:
Beam neutral axis
Elemental system
End releases
Plot attributes, such as area, moments of inertia, flexural stiffness and
torsional stiffness
Table 1. Review Description
Option
Description
Result
Location
Where the axis should be drawn:
Neutral axis (without offset)
Neutral axis with offset
Shear center with offset
Draw a colored line at selected location on review.
Elemental System
Select element axis to display
Change axis color and
scale
Display each element system on review.
Released dofs
Show/Hide start-end node pins.
Show a label of released dofs, only if dofs are released at
node on review.
Plot options
Graphically show quantities, such as:
Area
Iyy
Izz
Iyz
J
E.Area
E.Iyy
E.Izz
G.J
Graphically plot quantities as arrows on each end of the
beams.
Expected Results
In this example, there is a mix of CBAR and CBEAM elements using the same section
shape. In the case of CBAR, solver enforce Shear center is to match with Centroid
(Neutral Axis). In the case of CBEAM elements, there is a distance between Shear
center and Neutral axis. In order to place all of these beams as stiffeners on top
of a shell, an offset has been applied to the elements. Figure 1. . The raw position of neutral axis and discrepancies between CBAR and
CBEAM.
Figure 2. . Considering offset, neutral axis is continuous along the path. The tapered
beam is also captured. Figure 3. . Shear center position with offset value. Usually offset is not seen while 1D
are in traditional representation. Figure 4. . Display Moment of Inertia Izz along a path of elements. Figure 5. . Released degree of freedom on both ends (only first element is released). The
second element has no offset applied.
