The Mode shape result shows the shape of the buckled component at that load.
This is also known as eigenmode. The buckling analysis does not calculate actual displacements for such a mode shape. The mode shape is simply an arbitrarily scaled set of displacements.
Using this result
The eigenvalue associated with the buckling mode is displayed in the legend at the top right of the plot. The eigenvalue represents the factor by which the applied load, in the case of Stress analysis, or the internal loads in the case of Warp analysis, must be multiplied in order to induce buckling. If this eigenvalue is less than one the part will buckle with less than 100% of the applied load.
Tip: Click 
(Step Forward) to view each mode shape in turn if the analysis has output more than one eigenvalue.
(Step Forward) to view each mode shape in turn if the analysis has output more than one eigenvalue.