Nodal averaging of elemental results at a node refers to the average of all the element corner results passing through that node. If no corner results are available for an element, centroidal results will be used to calculate the nodal average.

In the example figure below, four elements are passing through Node 400. The average results at Node 400 are equal to

\displaystyle \frac{A_2 + B_1 + C_3 + D_4}{4}

when “Use corner data” is turned on.

\displaystyle \frac{A + B + C + D}{4}

when “Use corner data” is turned off.