In this paper, the use of contour plotting to display the mode shapes of free vibration and buckling of laminate plates is reported. Contour plotting is shown to be superior to three- dimensional hidden-line plots. In addition to easy distinction of the nodal and peak-valley lines and isometric contours of equal elevations of the deformed mid-plane of the plate, contour plotting exhibits the fiber direction in the dominating layers of the laminate plate. Although only square laminate plates symmetric about their respective mid-planes and fully clamped are discussed, application of the contour plotting method can be extended for other types of laminate plates and boundary conditions.
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