Define the in-plane dimensions of the laminated plate.
The image below shows the Plate Geometry tab after you have defined the laminate using the Laminate tab. Note, the thickness of the laminate is completely defined previously in the Laminate tab and is carried forward into the Plate Geometry tab. Thus, you only have to specify the length and width of the plate in the Plate Geometry tab. The image of the plate will update dynamically as you adjust the length and width. At this point, you are ready to proceed to one of the three calculation tabs to calculate Bending, Stability, or Vibration.