Occasionally, there are discrepancies among displacement contour plots, depending on /GRAPH and /EFACET settings. For one representative model,  the following discrepancies could be observed from a modal analysis of a SOLID95 mesh:

Max USUM contour values:

    Full graphics : .1266
    Power graph w/ /EFACET,1: .1235
    Power graph w/ /EFACET,2: .1270
    Power graph w/ /EFACET,4: .1272

It is possible that /GRAPH and /EFACET settings can affect contour plots of displacement values. Here is the explanation:

1. Full graphics:

Even though Full graphics plots only the corner nodes of elements, it uses the full set of nodal results at all nodes (including midside nodes) when calculating the contour range. For this model, the maximum nodal displacement occurred at a midside node, and this maximum value therefore affects the DMX and maximum contour value reported in the plot.

2a. Power graphics, /EFACET,1:

Power graphics uses only the values for the specified subgrid level when reporting DMX and when calculating the contour range. For /EFACET,1, only results at the corner nodes are included. For this model, then, the maximum contour value is based on corner-node values only. The maximum value at a midside node is not considered, leading to a discrepancy between this plot and the Full graphics plot.

2b. Power graphics, /EFACET,2:

For /EFACET,2, subgrid points include the midside nodes, and the centroid of each element face. For this model, the displacement was greatest at the centroid of one face, causing a further discrepancy.

2c. Power graphics, /EFACET,4:

For /EFACET,4, subgrid points include the midside nodes, quarter points along each edge, the centroid of each element face, and the quarter points of each element face. For this model, the displacement was greatest at a quarter point on a face, causing a further discrepancy.

If you zoom in on the element having maximum displacements, turn on /PNUM,SVAL,1, and plot contour values with these various settings of /GRAPH and /EFACET, you should readily observe these effects.

For this model, the most accurate displacement value will be obtained with /GRAPH,POWER and /EFACET,4. If a significant discrepancy is found between /GRAPH,FULL and PowerGraphics with /EFACET,2 or 4, then this would give a quick indication that the mesh might be too coarse. For this model, the discrepancy appears to be relatively small, indicating that the mesh was probably fine enough.