Effect of Imperfections and Damping on the Type of Nonlinearity of Circular Plates and Shallow Spherical Shells

<table> Type of nonlinearity
for (a): mode (0,1) and (b): (0,2); for an imperfection having the shape of
mode (2,0,C).</table>

Mathematical Problems in Engineering

Figure 10: Effect of Imperfections and Damping on the Type of Nonlinearity of Circular Plates and Shallow Spherical Shells 