The Displacements, core result is created only if you have modeled a core, and the option in the Fill analysis advanced options has been turned on.
It shows the deflections of the core during the filling and packing phases of the molding cycle. The default display shows the final deflections of the core at the time indicated in the top-right corner of the display. The magnitude of the displacements is exaggerated by the scale factor set in the plot properties (typically 10).
The magnitude and distribution of pressures on the core vary considerably during filling and packing, therefore, the displacement of the core will also vary with time. These effects can be seen by animating the result using the Animation toolbar. The maximum value on the legend is the maximum displacement that occurred during the filling and/or packing phases.