| AID | Analysis Name |
|---|---|
| 025 | Beam Buckling, Column Plane 1, I1 |
| 026 | Beam Buckling, Column Plane 1 w/TSF, I1 |
| 027 | Beam Buckling, Column Plane 2, I2 |
| 028 | Beam Buckling, Column Plane Min, Imin |
| 031 | Beam Buckling, Flexural-Torsional |
| 033 | Beam Buckling, Cylindrical, Axial and Bending, Rayleigh Ritz |
| 034 | Beam Buckling, Cylindrical, Axial and Bending, NASA SP-8007 |
| 035 | Beam Buckling, Column Tapered Cross-Section |
Column buckling refers to the Euler buckling of prismatic beams. Only axial load is considered, and several margins of safety are reported for buckling about the principal axes of the beam.
Flexural-torsional buckling refers to a coupled flexural-torsional or uncoupled torsional buckling mode due to axial load only. These modes might be critical for unsymmetric, open beam sections.
Circular beams may buckle like long cylinders. There are two methods available to compute this margin: one using the NASA SP-8007 method and the other using a more general Rayleigh-Ritz solution.
Lastly, the tapered tube beam concept has a unique failure analysis due to the fact the it is non-prismatic (cross-section varies on its length). The column buckling equation is solved using a numerical method.
Tip: If the beam is supported along its span (i.e. ringframe), beam buckling modes should be deactivated.
See the HME document for more detailed information.