This function is used to find the highest interface
pressure of each element during the whole forming time and plot as contour map.
Open the D3PLOTINT file of multiple stages, and click TOOLàMAX PRESSURE OVER
TIME to display the control window. Then select the Execute button to calculate
automatically the highest interface pressure of each element during the whole
forming time and plot as contour map. Please refer to section 8.3 for a detailed
description of the contour setting.