Use 1 for buckling force, 2 for maximum deflection and 3 for buckling stress

**Notes**

If a double clamped beam as shown in the figure above is subjected
to a compressive stress, it will buckle if the applied stress is
higher than the critical buckling stress of the beam. Beyond the
critical buckling force, the beam will not be stable in the
straight position and will assume a cosine shape. This is the first
order buckling.

Use this form to determine the critical buckling force and corresponding buckling stress for the given beam. If the compressive stress is known, the deflection resulting from buckling can be estimated. This is the maximum deflection value at the center of the beam.

The plot shows the deflection profile for the given compressive stress. Using the crosshair tool, the deflection at every point on the beam can be estimated.

-The default material is Silicon with a Young's modulus of 180GPa.

-The beam has uniform cross section.

-The fixed ends are perfectly clamped.

-A cosine shape for the buckled beam is assumed.

-The compressive force acts along the middle plane of the beam.

Mechanics > Structures > Beams > Clamped beam > Buckling stress