Dynamic Instability Analysis of a Rotating Ship Shaft under a Periodic Axial Force by Discrete Singular Convolution

Figure 9

Dynamic instability region of a rotating ship shaft with = 3 and = 0.05. “—,” “- -,” instability region boundary with = 3, = 0.05 and = 3, = 0 by Floquet’s method; “●,” “○,” stable and unstable data with = 3, = 0.05 by DSC method.