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When looking at plate surface stresses, it is important that the elements be orientated
correctly with respect to each other. Associated with each element is a local coordinate
system, denoted by x-y-z in Strand7. The x and y axes lie in the plane of the plate and the
z axis is normal to the plate's surface as shown below. It is important that the local z
axis point in the same direction for adjoining plates otherwise contour plots of suface
stress can be meaningless. To check your plate's orientation, simply set the plate display
type to "Orientation" and redraw.
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