I'm finding that when doing a static thermal analysis on even a simple part I'm not getting symmetrical contraction or expansion. Modeling a simple rod that sees a 100C uniform temperature change gives me displacements from the edge of the rod rather than uniformly from the center axis. In the included pic I display the (Y-Disp). The color contours show increasing displacement from one outer edge to the opposite outer edge. The colors should be symmetrical about the center axis.
Thank you for any help/direction you can give.